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Syncom
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| Syncom-1/2/3 type | Leasat (Syncom-4) type |
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Syncom
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| Syncom-1/2/3 type | Leasat (Syncom-4) type |
This page contains philatelic information on the SYNchronous COMmunications (Syncom) series satellites. Catalog numbers, years of issue, and notes on the satellites featured are given when available. If readers know of additional information or images, please contact the authors using the e-mail addresses at the bottom of this page.
The five Syncom-4 series satellites were also called Leasat (LEAsed SATellite).
Syncom and Early Bird / Intelsat-1 are similar cylindrical spin-stabilized spacecraft, but Early Bird is taller (greater height-to-width aspect ratio), and Syncom has a larger nozzle in relation to the spacecraft body.
Items depicting a satellite based on the Syncom publicity photo are highlighted in yellow in the table below.
| Launch information (found elsewhere) |
Reference images (found elsewhere) |
Launch covers (including anniversary-of-launch covers, and launch-related event covers) (farther below) |
Other postal items (stamps, souvenir sheets, aerogrammes, postal cards, etc.) (immediately below) |
|---|---|---|---|
| Syncom | Syncom | Syncom | Syncom |
| Syncom (on other than Syncom launch covers) |
Below is a list of Syncom-series satellite postal items (stamps, souvenir sheets, aerogrammes, postal cards, etc.).
| Country | Catalog Number | Type of Item | Year of Issue | Notes on Content |
|---|---|---|---|---|
| SYNchronous COMmunications (Syncom) | ||||
| Abkhazia | Unlisted d (Mi unlisted) | One of MS6 (a-f) | 1996 | Syncom-4-3/Leasat-F3; see also Tajikistan None e (2000), and STS-51I launch (1985-09-01) |
| Abkhazia | Mi347 | One of MS8 (Mi346-353 + label) | 1999 | Leasat (Syncom-4) type (with folded antennas); see also Osetia (North) Local_e (1997) |
| Ajman | Mi257A Mi257B | Imperforate | 1968 | "Early Bird" (but Syncom publicity image1) |
| Ajman | Mi257A-259A+Mi261A-262A fdc | One of five stamps on FDC | ||
| Ajman | Mi2506 | One of MS50 (Manama Mi1195A-1219A + Mi2493A-2517A) One of imperforate MS50 (Manama Mi1195B-1219B + Mi2493B-2517B) | 1972 | Syncom publicity image1 |
| Ajman | BL527 | MS5 (Mi2503-2507) | ||
| Andorra (French Admin.) | 167 fdc (Mi193 fdc) | (Éditions J.F.) cachet on FDC | 1965 | "Syncom-2" (in cachet, depicted as 8-sided and non-cylindrical); Early Bird / Intelsat-1 (on stamp) |
| Austria | None | (Pictorial) cancel and cachet on postal card | 1965 | |
| Belgium | 836 card (Mi1714 card) | (Pictorial) cancel and cachet on card | 1980 | |
| Belgium | None | (Pictorial) cancel on cover | 1980 | |
| Benin | 433 (Mi185) | 1979 | ||
| Benin | 433 pair | 433 gutter-pair | ||
| Benin | 432-433 pair fdc | One of two gutter-pairs (432-433) on FDC (EDILA cachet) | ||
| Benin | 1061B (Mi1110) | 433 overprinted and changed value | 1998 | |
| Benin | 1061C (Mi1111) | 433 overprinted | ||
| Benin | 1061C pair | 1061C gutter-pair, 433 gutter-pair, overprinted | ||
| Bhutan | 242a (BL80A) i242a (BL80B) | SS1 Imperforate SS1 | 1978 | |
| Burundi | 132+label (Mi173A+label) | Stamp only | 1965 | |
| Burundi | 127+130-132 fdc | One of four stamps on FDC | ||
| Burundi | i128-i130+i132 fdc | One of four imperforate stamps on FDC | ||
| Cambodia | C54 (BL?) | SS1, gold foil | 1975 | Syncom-1/2/3 type |
| Cameroun | C54 (Mi427) | 1965 | Syncom publicity image1 (except with no rocket flame) | |
| Cameroun | C54 proof | Signed proof | ||
| Cameroun | C54 fdc | Stamp on FDC | ||
| Cape Kennedy FL (USA) | Local Local imperf | Imperforate | 1965 | |
| Cape Kennedy FL (USA) | Local imperf fdc | Imperforate stamp on FDC | ||
| Chad | 239 (Mi385) | 1971 | ||
| Chad | 237-239 fdc | One of three stamps and (orange and brown and black printed) cachet on FDC | ||
| Chile | 375 (Mi702) | 1969 | ||
| Chile | C290 (Mi703) | |||
| Chile | 397 (Mi746) | 375 overprinted in red | 1970 | |
| Chile | C308 (Mi747) | C290 overprinted in red | 1971 | |
| Chile | 402 (Mi754) | 1971 | ||
| Chile | C312 (Mi755) | |||
| Chile | B5 (Mi795) | 402 overprinted in black | 1974 | |
| Comoro Islands | C14 (Mi67) iC14 | CD120 Imperforate | 1965 | Syncom publicity image1 (except with no rocket flame) |
| Comoro Islands | C14 ds | Deluxe sheet (C14) | ||
| Comoro Islands | C14 fdc | Stamp and (PJ) cachet on FDC | ||
| Comoro Islands | 196a (BL38) | In (upper) margin of SS1 (196) | 1976 | Syncom publicity image1 |
| Comoro Islands | 196a fdc | SS1 on FDC | ||
| Comoro Islands | 197a (BL39) | In (upper) margin of SS1 (197) | ||
| Comoro Islands | 198a (BL40) | In (upper) margin of SS1 (198) | ||
| Comoro Islands | 199a (BL41) | In (upper) margin of SS1 (199) | ||
| Comoro Islands | 199a fdc | SS1 on FDC | ||
| Comoro Islands | 200 (Mi292) | |||
| Comoro Islands | 200a (BL42) | On stamp and in (upper) margin of SS1 (200) | ||
| Comoro Islands | 201a (BL43) | In (upper) margin of SS1 (201) | ||
| Comoro Islands | 202 (BL36) | On stamp of SS1 | ||
| Comoro Islands | 203 (BL37) | On stamp of SS1 | ||
| Comoro Islands | 218 (Mi301A) i218 (Mi301B) | Imperforate | 1976 | |
| Comoro Islands | 218a (BL48A) i218a (BL48B) | On stamp of SS1 (218) On stamp of imperforate SS1 (i218) | ||
| Comoro Islands | 218a var | SS1, perforation variation | ||
| Comoro Islands | Mi424A Mi424B | Imperforate | 1978 | Syncom publicity image1 (except with no rocket flame) |
| Comoro Islands | 473 (Mi572) | 218 overprinted in black | 1979 | |
| Congo (People's Republic) | C174 (Mi397) | 1973 | Syncom publicity image1 | |
| Congo (People's Republic) | C174 fdc | Stamp and (blue and black printed) cachet on FDC | ||
| Dahomey | J43 (Mi_T46) | One of pair (J43a (J42-J43)) (Mi_T45-T46) | 1967 | "Early Bird" (but Syncom depicted) |
| Dubai | 146 (Mi390) | 1971 | "Syncom-3", "Intelsat-2", "Intelsat-3, "Intelsat-4" (all depicted and in text) | |
| Dubai | C56 (Mi392) | "Syncom-3" | ||
| Ecuador | 748A (Mi1991) | 1966 | (8-sided, non-cylindrical) Syncom (above), "Early Bird" (below) | |
| Ecuador | 748Eg (BL14) i748Eg (BL15) | On one of MS3 (748A+748C+748E) (Mi1991+1993+1995) On one of imperforate MS3 (i748A+i748C+i748E), with changed background color | ||
| Equatorial Guinea | Mi388 | 1974 | ||
| Equatorial Guinea | Mi835 | 1976 | Syncom publicity image1 | |
| Equatorial Guinea | BL263 | On stamp of SS1 | 1977 | |
| Franklin Mint (USA) | None | (Bronze) medallion, also reverse | 1970s | "Syncom-2" (Syncom publicity image1) |
| Franklin Mint (USA) | None | (Silver) medallion, also reverse | "Syncom-2" (Syncom publicity image1) | |
| France | 1657 fdc (Mi2168 fdc) | (Éditions J.F.) cachet on FDC | 1979 | |
| French Guiana | None | (Pictorial) cancel and (Éditions P.A.C.) cachet on cover | 1972 | |
| French Polynesia | C33 (Mi44) iC33 | CD120 Imperforate | 1965 | Syncom publicity image1 (except with no rocket flame) |
| French Polynesia | C33 fdc | Stamp on FDC | ||
| French Southern and Antarctic Territories | C8 (Mi32) iC8 | CD120 Imperforate | 1965 | Syncom publicity image1 (except with no rocket flame); (multi-sided, non-cylindrical Syncom in FDC2 cachet) |
| French Southern and Antarctic Territories | C8 fdc1 | Stamp and (PJ) cachet on FDC | ||
| French Southern and Antarctic Territories | C8 fdc2 | Stamp and (Éditions J.F.) cachet on FDC | ||
| French Southern and Antarctic Territories | iC8 proof1 | Imperforate proof | ||
| French Southern and Antarctic Territories | iC8 proof2 | Imperforate proof (different) | ||
| Gabon | 180 fdc (Mi221 fdc) | (PJ) cachet on FDC | 1965 | Syncom publicity image1 (except with no rocket flame, replaced by a contrail) |
| Germany (West) | 920 (Mi469) | 1965 | ||
| Germany (West) | 920 fdc | Stamp and (FIDACOS) cachet on FDC | ||
| Germany (West) | None | Cinderella (poster stamp), one of MS30 cinderella | ~1966 | "Syncom-1" publicity image1 |
| Germany (West) | 920 cover (Mi469 cover) | Stamp and (pictorial) cancel and cachet on cover | 1968 | Syncom (on stamp); (possible) Intelsat-3 (on cancel and cachet) |
| Great Britain | 442-443 fdc (Mi406-407 fdc) | (Black and red printed) cachet on FDC | 1965 | |
| Guinea-Bissau | 375F (BL61A) i375F (BL61B) | In (upper-right) margin of SS1 In (upper-right) margin of imperforate SS1 | 1977 | |
| Guinea-Bissau | 544 (BL254) | On stamp of SS1 | 1983 | Syncom publicity image1 (also "Sputnik"-1) |
| Guinea Republic | 604 (Mi622) i604 | Imperforate | 1972 | "Syncom" |
| Honduras | C440 (Mi717) | 1968 | ||
| Honduras | C442ac (Mi724) | MS3 (C442a (b-d)) (BL11, Mi723-725) | ||
| Honduras | C453 (Mi737) | C440 overprinted in red | 1969 | |
| Honduras | C453a (BL14) | MS3 (b-d), C442a overprinted in black | ||
| Hungary | C259 (Mi2200A) iC259 (Mi2200B) | Imperforate | 1965 | "Syncom-3" (in text, depicted as 8-sided and non-cylindrical) |
| Israel | 294+label (Mi343+label) | Stamp only | 1965 | |
| Israel | 294+label fdc1 | Stamp and (Israel Post) cachet on FDC | ||
| Israel | 294+label fdc2 | Stamp on FDC (Israel Post cachet, different) | ||
| Israel | 294+label fdc3 | Stamp on FDC (Israel Post cachet, different) | ||
| Italy | 909 fdc (Mi? fdc) | (Black printed) cachet on FDC | 1965 | Syncom publicity image1 |
| Italy | 1378 (Mi1669) | 1979 | Syncom publicity image1 | |
| Italy | 1377-1378 fdc1 | One of two stamps and (Capitolium) cachet (includes the designs of both stamps) on FDC | ||
| Italy | 1377-1378 fdc2 | One of two stamps and (Roma) cachet on FDC | Syncom publicity image1 (in one stamp, as above); Syncom-1/2/3 type (in cachet) | |
| Japan | 840 folder (Mi888 folder) | Folder front, also inside and back | 1965 | |
| Japan | 840 fdc (Mi888 fdc) | (Japan Stamp Publicity Association) cachet on FDC, also back | ||
| Jordan | 521 (Mi541) i521 | Imperforate | 1965 | Syncom-1/2/3 type |
| Jordan | 521D (Mi545) i521D | Imperforate | ||
| Jordan | 521E (BL27) | Imperforate SS1 | Syncom-1/2/3 type (with rocket flame, but not publicity image1) | |
| Kathiri State of Seiyun (South Arabia) | Mi85A Mi85B | Imperforate with changed color | 1966 | Syncom publicity image1 |
| Kathiri State of Seiyun (South Arabia) | Mi88A Mi88B | Imperforate with changed color | ||
| Kathiri State of Seiyun (South Arabia) | BL1 | One of MS2 (Mi87-88) | ||
| Khor Fakkan | Mi28 | 1965 | ||
| Khor Fakkan | Mi31 | |||
| Khor Fakkan | Mi25-32 fdc | Two of eight stamps on FDC | ||
| Khor Fakkan | Mi82 | Mi31 overprinted new currency | 1966 | |
| Korea (North) | 2333 (BL152) | 1983 | ||
| Korea (South) | 549 (Mi570) | 1967 | ||
| Korea (South) | 549a (BL246) | Imperforate SS1 | ||
| Laos | C118 (Mi388) | 1974 | ||
| Laos | C118 ds | Deluxe sheet (C118) | ||
| Laos | C118 proof | Signed artist proof (C118) | ||
| Liberia | 415 (Mi619) | 1964 | ||
| Liberia | 415 ds | Imperforate deluxe sheet (415) | ||
| Libya | 600a (BL19) | In (right and left) margins of MS4 (4x 600) | 1976 | Syncom publicity image1 (except with no rocket flame) |
| Libya | 601 (Mi514A) i601 (Mi514B) | Imperforate | ||
| Libya | 601a (BL20) | On stamps and in (right and left) margins of MS4 (4x 601) | ||
| Libya | 672 (Mi?) i672 | Imperforate | 1977 | Syncom publicity image1 (except with no rocket flame) |
| Libya | 672a (BL27) i672a | MS4 (4x 672) Imperforate MS4 (4x i672) | ||
| Libya | i672b (BL?) | Imperforate SS1 | ||
| Libya | 674 (BL?) i674 | In (upper) margin of SS1 In (upper) margin of imperforate SS1 | ||
| Libya | 671-673+675-677 fdc | One of six stamps on FDC | ||
| Madagascar (Malagasy Republic) | 661 (Mi921) | 1983 | (tiny) Syncom | |
| Madagascar (Malagasy Republic) | 661 ds | Deluxe sheet (661) | ||
| Madagascar (Malagasy Republic) | 1539b (Mi2492) i1539b | One of MS6 (1539 (a-f)) (Mi2491-2496) One of imperforate MS6 (i1539 (a-f)) | 2000 | "Syncom-1" (but Syncom publicity image1) |
| Madagascar (Malagasy Republic) | 1539 proof | On one of imperforate proof MS6 | ||
| Madagascar (Malagasy Republic) | 1539 fdc | MS6 on FDC | ||
| Maldive Islands | 147a (Mi147) | In (upper-left) margin of MS9 (9x 147) | 1965 | Syncom publicity image1 |
| Maldive Islands | 148a (Mi148) | In (upper-left) margin of MS9 (9x 148) | ||
| Maldive Islands | 149a (Mi149) | In (upper-left) margin of MS9 (9x 149) | ||
| Maldive Islands | 150a (Mi150) | In (upper-left) margin of MS9 (9x 150) | ||
| Manama | Mi87A Mi87B | Imperforate | 1968 | "Early Bird" (but Syncom publicity image1) |
| Manama | Mi87A-89A+Mi91A-92A fdc Mi87B-89B+Mi91B-92B fdc | One of five stamps on FDC One of five imperforate stamps on FDC | ||
| Manama | BL208A BL208B | In (upper-left) margin of SS1 (Mi1072A) In (upper-left) margin of imperforate SS1 (Mi1072B) | 1972 | Syncom publicity image1 |
| Manama | Mi1209A Mi1209B | One of strip of 5 (Mi1205A-1209A), or one of MS50 (Mi1195A-1219A + Ajman Mi2493A-2517A) One of imperforate strip of 5 (Mi1205B-1209B), or one of imperforate MS50 (Mi1195B-1219B + Ajman Mi2493B-2517B) | 1972 | Syncom publicity image1 |
| Manama | BL237A BL237B | MS5 (Mi1205A-1209A) Imperforate MS5 (Mi1205B-1209B) | ||
| Mauritania | C35 (Mi230) iC35 | Imperforate | 1964 | Syncom publicity image1 (except with no rocket flame, replaced by a contrail) |
| Mauritania | C35 proof | Signed proof (C35) | ||
| Mauritania | C35 fdc1 | Stamp and (Éditions J.F.) cachet on FDC | ||
| Mauritania | C35 fdc2 | Stamp and (PJ) cachet on FDC | ||
| Monaco | 605 (Mi798) | 1965 | "Syncom-2" | |
| Monaco | 605 maxi | Maxicard | ||
| Monaco | 605 fdc | Stamp and (Éditions J.F.) cachet on FDC | ||
| Monaco | 605-607 fdc | One of three stamps on FDC (B. Minne cachet) | ||
| Monaco | 605-610 fdc | One of six stamps on FDC (B. Minne cachet) | ||
| Mongolia | 443 (Mi456) | 1966 | "Syncom-3" (depicted as 12-sided and non-cylindrical, also launch date in text) | |
| Morocco | 102-103+C10 fdc (Mi531-533 fdc) | (Éditions J.F.) cachet on FDC | 1964 | |
| Morocco | 735 (Mi1206) | 1992 | Leasat (Syncom-4) type (with folded antennas and attached booster) (at middle-right) | |
| Morocco | 735 fdc | Stamp and cachet (design like stamp) on FDC | ||
| Netherlands Antilles | 423 (Mi373) | 1978 | Early Bird / Intelsat-1 or Syncom | |
| Netherlands Antilles | 421-423 fdc | One of three stamps and cachet on FDC | ||
| New Caledonia | C40 (Mi412) iC40 | CD120 Imperforate | 1965 | Syncom publicity image1 (except with no rocket flame, on stamp); "Syncom-2" (in cachet, depicted as 8-sided and non-cylindrical) |
| New Caledonia | C40 fdc | Stamp and (Éditions J.F.) cachet on FDC | ||
| New Hebrides (France) | 124 (Mi210) | CD120 | 1965 | Syncom publicity image1 (except with no rocket flame) |
| New Hebrides (France) | 125 (Mi211) | |||
| New Zealand | 370 fdc1 (Mi439 fdc1) | (Cyan and red and black printed) cachet on FDC (Surfdale NZ cancel) | 1965 | "Syncom-2" (but Syncom publicity image1) |
| New Zealand | 370 fdc2 (Mi439 fdc2) | (Cyan and red and black printed) cachet on FDC (Ohau NZ cancel) | ||
| New Zealand | 370 fdc3 (Mi439 fdc3) | (Cyan and red and black printed) cachet on FDC (Christchurch NZ cancel) | ||
| New Zealand | 370 fdc4 (Mi439 fdc4) | (Cyan and red and black printed) cachet on FDC (Christchurch NZ FD cancel) | ||
| New Zealand | 370 fdc5 (Mi439 fdc5) | (Cyan and red and black printed) cachet on FDC (Napier NZ cancel) | ||
| New Zealand | 370 fdc6 (Mi439 fdc6) | (Cyan and red and black printed) cachet on FDC (Aukland NZ FD cancel) | ||
| New Zealand | 370 fdc7 (Mi439 fdc7) | (Cyan and red and black printed) cachet on FDC (Papatoetoe NZ cancel) | ||
| New Zealand | 370 fdc8 (Mi439 fdc8) | (Cyan and red and black printed) cachet on FDC (Wellington NZ FD cancel) | ||
| New Zealand | 370 fdc9 (Mi439 fdc9) | (Cyan and red and black printed) cachet on FDC (Invercargil NZ cancel) | ||
| New Zealand | 370 fdc10 (Mi439 fdc10) | (Cyan and red and black printed) cachet on FDC (no stamp or cancel) | ||
| Niger | C158 (Mi290) | 1971 | ||
| Niger | C158 fdc | Stamp and cachet (satellite same design as on stamp) on FDC | ||
| Niger | C158 proof | Signed proof (purple) | ||
| Niger | C214 (Mi380) iC214 | Imperforate | 1973 | Syncom publicity image1 (except with no rocket flame) |
| Niger | C214 proof | Signed proof | ||
| Niger | C214 proofs | Color proofs | ||
| Nigeria | 144 (Mi135) | From MS12 (144a (12x 144)) | 1963 | |
| Nigeria | 143-144 fdc | One of two stamps and cachet on FDC | ||
| Nigeria | 177 (Mi168) | 1965 | ||
| Osetia (North) | Local_e | One of local post MS6 (a-f) | 1997 | Leasat (Syncom-4) type (with folded antennas); see also Abkhazia Mi347 |
| Osetia (North) | Local_fdc | MS6 on FDC | ||
| Pakistan | 710 (Mi750) | 1989 | Syncom (in upper-right of stamp) | |
| Pakistan | 710 fdc | Stamp on FDC | ||
| Pakistan | 710 folder | Folder | ||
| Panama | 457E (Mi783) | 1964 | "Syncom-3" | |
| Panama | 457Ef (BL29) i457Ef (BL30) | On stamp of SS1 On stamp of imperforate SS1 with changed color | ||
| Panama | 457Ef fdc | SS1 on FDC | ||
| Panama | C351 (Mi902) iC351 (Mi903) | Imperforate with changed colors | 1966 | "Syncom" |
| Panama | iC351 proof | Imperforate proof | ||
| Panama | C352 (BL54) | On stamp of SS1 | ||
| Panama | 473B (Mi940) | 1966 | Syncom, Early Bird | |
| Panama | 473Bc (BL61) i473Bc (BL62) | On one stamp of MS2 (473A-473B) On one stamp of imperforate MS2 (i473A-i473B), changed colors | ||
| Panama | 489A (Mi1095a) | 457E overprinted in black | 1968 | "Syncom-3" |
| Panama | 489A_gold (Mi1095b) | 457E overprinted in gold | ||
| Panama | 489-489A fdc | One of two stamps and cachet on FDC | ||
| Panama | 489Ab (BL94) i489Ab (BL95) | On stamp of SS1, 457Ef overprinted in gold On stamp of imperforate SS1 with changed color, i457Ef overprinted in gold | ||
| Panama | 489Ab_black (BL94_black) i489Ab_black (BL95_black) | On stamp of SS1, 457Ef overprinted in black On stamp of imperforate SS1 with changed color, i457Ef overprinted in black | ||
| Paraguay | 831 (Mi1336) i831 (Mi1344) | Imperforate with changed colors | 1964 | "Syncom" publicity image1 |
| Paraguay | 831-832 fdc | One of two stamps on FDC | ||
| Paraguay | 896 (Mi1472) | 1965 | "Syncom" | |
| Paraguay | 898 (Mi1474) | |||
| Paraguay | 895-899 fdc1 | Two of five stamps on FDC | ||
| Paraguay | 895-899 fdc2 | Two of five stamps on FDC (different) | ||
| Paraguay | 900 (Mi1476) | |||
| Paraguay | 900a (BL73) i900a (BL74) | On one stamp and in (upper-left) margin of MS2 (899-900) On one stamp and in (upper-left) margin of imperforate MS2 (i899-i900), changed colors | ||
| Paraguay | 900a muestra i900a muestra | On one stamp and in (upper-left) margin of MS2 (899-900) overprinted "muestra" On one stamp and in (upper-left) margin of imperforate MS2 (i899-i900), changed colors, overprinted "muestra" | ||
| Paraguay | 902 (Mi1478) | |||
| Paraguay | 900-902 fdc | Two of three stamps on FDC | ||
| Paraguay | 997 (Mi1653) i997 (Mi1661) | Imperforate with changed colors | 1966 | "Syncom-1", "Syncom-2", "Syncom-3", "Early Bird" (but all images are Syncom publicity images1, except with no rocket flames) |
| Paraguay | 997 muestra i997 muestra | Overprinted "muestra" Imperforate with changed colors, overprinted "mustra" | ||
| Paraguay | 998 (Mi1654) i998 (Mi1662) | Imperforate with changed colors | ||
| Paraguay | 998 muestra i998 muestra | Imperforate with changed colors, overprinted "muestra" | ||
| Paraguay | 994-998 fdc i994-i998 fdc | Two of five stamps on FDC Two of five imperforate stamps on FDC, also back | ||
| Paraguay | 1046 (Mi1762) | Also detail | 1967 | "Syncom-2" (but Syncom publicity image1) |
| Paraguay | 1151 (Mi1908) | 1969 | (Three) Syncom(s) | |
| Paraguay | 1152a (BL122) | On one of MS3 (1147-1148+1151), changed colors | ||
| Paraguay | C398 (BL235, Mi2613) | On stamp of SS1 | 1974 | (multi-sided, non-cylindrical) Syncom-1/2/3 type |
| Philippines | BLIIA BLIIB | In (upper) margin of SS1 In (upper) margin of imperforate SS1 | 1968 | |
| Philippines | BLIIA snv | In (upper) margin of SS1, BLII overprinted "SNV" | ||
| Philippines | BLIIB air | In (upper) margin of imperforate SS1, BLII inscribed "airmail" | ||
| Qatar | 62 (Mi65A) i62 (Mi65B) | Imperforate | 1965 | "Syncom-III" (Syncom-3) |
| Qatar | 64 (Mi67A) i64 (Mi67B) | Imperforate | ||
| Qatar | 67 (Mi70A) i67 (Mi70B) | Imperforate | ||
| Qatar | 68 (Mi71A) i68 (Mi71B) | Imperforate | ||
| Qatar | 68a (BL2A) i68a (BL2B) | On two of MS2 (67-68) On two of imperforate MS2 (i67-i68) | ||
| Qatar | 92 (Mi95) | 62 overprinted in black | 1966 | "Syncom-III" (Syncom-3) |
| Qatar | 94 (Mi97) | 64 overprinted in black | ||
| Qatar | 97 (Mi100) | 67 overprinted in black | ||
| Qatar | 98 (Mi101) | 68 overprinted in black | ||
| Qatar | 91-98 fdc | Four of eight stamps on FDC | ||
| Qatar | 98a (BL3Aa) i98a (BL3Ba) | On two of MS2 (97-98), 68a overprinted in black On two of imperforate MS2 (i97-i98), i68a overprinted in black | ||
| Qatar | 92 var1 (Mi95b) | 62 overprinted in red | 1966 | "Syncom-III" (Syncom-3) |
| Qatar | 94 var1 (Mi97b) | 64 overprinted in red | ||
| Qatar | 97 var1 (Mi100b) | 67 overprinted in red | ||
| Qatar | 98 var1 (Mi101b) | 68 overprinted in red | ||
| Qatar | 97 var2 (Mi100c) | 67 overprinted in blue | 1966 | "Syncom-III" (Syncom-3) |
| Qatar | 98 var2 (Mi101c) | 68 overprinted in blue | ||
| Qatar | 98a var2 (BL3Ac) i98a var2 (BL3Bc) | On two of MS2 (97-98), 68a overprinted in blue On two of imperforate MS2 (i97-i98), i68a overprinted in blue | ||
| Qatar | 114A (Mi196A) | 62 surcharged new currency in red | 1966 | "Syncom-III" (Syncom-3) |
| Qatar | 114C (Mi198A) | 64 surcharged new currency in black | ||
| Qatar | 114F (Mi201A) | 67 surcharged new currency in black | ||
| Qatar | 114G (Mi202A) | 68 surcharged new currency in red | ||
| Qatar | 117A (Mi226) | 92 surcharged new currency | 1966 | "Syncom-III" (Syncom-3)" |
| Qatar | 117C (Mi228) | 94 surcharged new currency | ||
| Qatar | 117F (Mi231) | 97 surcharged new currency | ||
| Qatar | 117G (Mi232) | 98 surcharged new currency | ||
| Qatar | 117Gh (BL10A) i117Gh (BL10B) | MS2 (97-98), 98a surcharged new currency Imperforate MS2 (i97-i98), i98a surcharged new currency | ||
| Ras Al Khaima | Mi31A Mi31B | Imperforate | 1966 | |
| Ras Al Khaima | Mi34A Mi34B | Imperforate | ||
| Ras Al Khaima | Mi30A-35A fdc | Two of six stamps on FDC | ||
| Ras Al Khaima | Mi107A Mi107B | Mi31A overprinted new currency Mi31B overprinted new currency | ||
| Ras Al Khaima | Mi110A Mi110B | Mi34A overprinted new currency Mi34B overprinted new currency | ||
| Ras Al Khaima | BL7 | On stamp of imperforate SS1 | ||
| Ras Al Khaima | BL7 fdc | Imperforate SS1 on FDC | ||
| Ras Al Khaima | BL19 | On stamp of imperforate SS1, BL7 overprinted new currency | ||
| Romania | 1711 (Mi2369) | 1965 | "Syncom-3" | |
| Romania | 1712 (Mi2370) | |||
| Romania | 1711-1714 fdc | Two of four stamps on FDC | ||
| Romania | 2500A (BL115) | On stamp of imperforate SS1 | 1974 | (multi-sided, non-cylindrical) Syncom-1/2/3 type |
| Rwanda | 110 (Mi115) i110 | Imperforate | 1965 | "Syncom" |
| Rwanda | 112 (Mi117) i112 | Imperforate | ||
| Rwanda | 109-112 fdc | Two of four stamps on FDC (Rwanda Post? cachet) | ||
| Rwanda | 113 (BL4) | In (right) margin of SS1 | ||
| Rwanda | 113 fdc | SS1 on FDC (Rwanda Post? cachet) | ||
| Rwanda | 589 (Mi636) | 1974 | Syncom publicity image1 | |
| St. Lucia | C1a (BL1) | In (upper-left) margin of SS1 | 1967 | |
| St. Pierre and Miquelon | C29 (Mi412) iC29 | CD120 Imperforate | 1965 | Syncom publicity image1 (except with no rocket flame, on stamp); "Syncom-2" (in cachet, depicted as 8-sided and non-cylindrical) |
| St. Pierre and Miquelon | C29 fdc | Stamp and (Éditions J.F.) cachet on FDC | ||
| St. Pierre and Miquelon | C29 ds | Deluxe sheet (C29) | ||
| St. Thomas and Prince Islands | 511 (Mi577) | One of pair (512a (511-512)) | 1979 | Syncom publicity image1 |
| Satellite Beach FL (USA) | Local | Set-C7 (blue) | 1964 | "Syncom" |
| Satellite Beach FL (USA) | Local fdc | Set-C7 (blue) on local post FDC | ||
| Satellite Beach FL (USA) | Local o/p | Set-C7 (blue) overprinted in gold | 1965 | "Syncom" |
| Satellite Beach FL (USA) | Local Local imperf | Imperforate | 1965 | |
| Satellite Beach FL (USA) | Local imperf fdc | Imperforate stamp (in cachet position) on FDC | ||
| Senegal | C39 (Mi290) | 1964 | Syncom publicity image1 (except with no rocket flame, on stamp); "Syncom-2" (in text on two cachets) | |
| Senegal | C39 fdc1 | Stamp and (PJ) cachet on FDC | ||
| Senegal | C39 fdc2 | Stamp and (multi-color printed) cachet (on FDC | ||
| Senegal | C39 fdc3 | Stamp and (Éditions J.F.) cachet on FDC | ||
| Sharjah | Mi188 | 1965 | ||
| Sharjah | Mi191 | |||
| Sharjah | Mi185-188 fdc | One of four stamps on FDC | ||
| Sharjah | Mi189-192 fdc | One of four stamps on FDC | ||
| Sharjah | Mi248 | Mi191 overprinted new currency | 1966 | |
| Somali Coast | C36 (Mi365) iC36 | CD120 Imperforate | 1965 | Syncom publicity image1 (except with no rocket flame) |
| Somali Coast | C36 fdc1 | Stamp on FDC (Éditions J.F. cachet) | ||
| Somali Coast | C36 fdc2 | Stamp and (PJ) cachet on FDC | ||
| Tajikistan | None e | One of MS6 (a-f) | 2000 | Syncom-4-3/Leasat-F3; see also Abkhazia Unlisted d (1996), and STS-51I launch (1985-09-01) |
| Togo | 502 (Mi448A) i502 (Mi448B) | Imperforate | 1964 | Syncom publicity image1 |
| Togo | 505 (Mi451A) i505 (Mi451B) | Imperforate | ||
| Togo | 500-505 fdc | Two of six stamps on FDC | ||
| Togo | 501-502+505 fdc | Two of three stamps on FDC | ||
| Togo | 502+504-505 fdc | Two of three stamps on FDC | ||
| Togo | 505a (BL17) | Imperforate MS4 (502-505) | ||
| Togo | 505a fdc | Imperforate MS4 on FDC | ||
| Togo | 516 (Mi457) i516 | Imperforate | 1965 | Syncom publicity image1 |
| Togo | 517 (Mi458) i517 | Imperforate | ||
| Togo | 518 (Mi459) i518 | Imperforate | ||
| Togo | 519 (Mi460) i519 | Imperforate | ||
| Togo | 520 (Mi461) i520 | Imperforate | ||
| Togo | 618 (Mi?) | Stamp-on-stamp: 520 | 1967 | Syncom publicity image1 |
| Togo | 622 (Mi?) | |||
| Turkey | 2111 (Mi2479) | 1979 | (small depictions of) Syncom (in the finger holes of the telephone dial) | |
| United Nations | 188 fdc (Mi204 fdc) | (Artmaster green) cachet on FDC | 1968 | Syncom publicity image1 |
| United Nations | 189 fdc (Mi205 fdc) | (Artmaster purple) cachet on FDC | ||
| United Nations | 945 (Mi1075) | Six stamps and in (lower-right) margin of MS6 (945a (6x 945)) | 2007 | Leasat (Syncom-4) type (in Shuttle cargo bay and floating, on stamp; in cargo bay only, in lower-right margin) |
| United Nations (Geneva) | 46 cover (Mi46 cover) | (Studio philatélique Marchand) cachet on FDC | 1976 | Syncom (in cachet); Early Bird (on stamp) |
| United States | None | (Black printed) cachet on cover (Norfolk VA cancel) | 1964 | "Syncom" (in NASA/Hughes logo) |
| United States | None | (Black printed) cachet on cover (Agana, Guam cancel) | 1964 | "Syncom" (in NASA/Hughes logo) |
| United States | None | (Orbit Covers) cachet on cover | 1968 | Syncom (but "Intelsat-4" in text) |
| United States | 1759 fdc 1710 cover | (Aeropex 1977) cachet on FDC, also annotated | 1978 1977 | Syncom publicity image1 (#5 in annotated cachet image) |
| United States | UC56 fdc | (Artmaster) cachet on (USPS) aerogramme FDC | 1983 | Syncom publicity image1 |
| Venezuela | 912 (Mi1697) | 1966 | Syncom (depicted as 6-sided and non-cylindrical) | |
| Wallis and Futuna Islands | C20 (Mi207) iC20 | CD120 Imperforate | 1965 | Syncom publicity image1 (except with no rocket flame) |
| Wallis and Futuna Islands | C20 fdc | Stamp and (PJ) cachet on FDC | ||
| Wallis and Futuna Islands | C20 ds | Deluxe sheet (C20) | ||
| Wallis and Futuna Islands | C20 proof | Signed proof (brown) | ||
| Wallis and Futuna Islands | C90 (Mi342) | 1979 | Syncom publicity image1 (not "Eole", as in text) | |
| Yemen Arab Republic | BL127 | In (left) margin of SS1 (Mi1126) | 1970 | |
| Yemen Arab Republic | BL149 | In (upper-right) margin of SS1 (Mi1274) | 1970 | |
| Yemen Arab Republic | BL150 | In (upper-left) margin of SS1 (Mi1280) | ||
| Yemen Arab Republic | BL181 | In (upper-left) margin of SS1 (Mi1502) | 1972 | |
| Yemen Arab Republic | BL182 | In (upper-left) margin of SS1 (Mi1507) | ||
| Yemen Mutawakelite Kingdom | Mi145A | 1965 | ||
| Yemen Mutawakelite Kingdom | Mi146A | |||
| Yemen Mutawakelite Kingdom | Mi147A | |||
| Yemen Mutawakelite Kingdom | Mi145A-147A fdc | Three stamps and (red and black printed) cachet on FDC | ||
| Yemen Mutawakelite Kingdom | BL17B | Printed-perforation SS1 | ||
| Yemen Mutawakelite Kingdom | BL17B fdc | SS1 and cachet on FDC | ||
| Yemen Mutawakelite Kingdom | Mi179A Mi179B | Mi145A overprinted in red Mi145B overprinted in red | 1965 | |
| Yemen Mutawakelite Kingdom | Mi180A Mi180B | Mi146A overprinted in black Mi146B overprinted in black | ||
| Yemen Mutawakelite Kingdom | Mi181A Mi181B | Mi147A overprinted in blue Mi147B overprinted in blue | ||
| Yemen Mutawakelite Kingdom | Mi179B-181B fdc | Three imperforate stamps on FDC | ||
| Yemen Mutawakelite Kingdom | BL23Ba BL23Bb | Printed-perforation SS1, BL17B overprinted in black Printed-perforation SS1, BL17B overprinted in red | ||
| Yemen Mutawakelite Kingdom | BL23Ba | Printed-perforation SS1, BL17B inverted overprint in black | ||
| Yemen Mutawakelite Kingdom | Mi387A Mi387B | Mi145A overprinted in red, different Mi145B overprinted in red, different | 1967 | |
| Yemen Mutawakelite Kingdom | Mi388A Mi388B | Mi146A overprinted in red Mi146B overprinted in red | ||
| Yemen Mutawakelite Kingdom | Mi389A Mi389B | Mi147A overprinted in red Mi147B overprinted in red | ||
| Yemen Mutawakelite Kingdom | BL51B | Printed-perforation SS1 (Mi390B), BL17B overprinted in red | ||
1Many Syncom images are similar to NASA's Syncom publicity photo, which does not look like any of the Syncom reference images provided. This publicity photo was created by Bob Special, a NASA technician at Cape Kennedy. The publicity photo shows a flame coming out of Syncom's apogee motor. This was probably to make the image more dramatic. Some of the stamp reproductions of the publicity photo eliminate the flame, as noted. It must also be pointed out that the real Syncoms had a larger cone-shaped nozzle extending outward from the apogee motor than shown on the publicity photo.
Below is a list of Syncom-series satellite launch covers (including anniversary-of-launch covers, and launch-related event covers).
| Country | Cancel Date | Cancel Location | Type of Item | Notes on Content |
|---|---|---|---|---|
| SYNchronous COMmunications (Syncom) | ||||
| 1963-02-14: Syncom-1 | ||||
| United States | 1963-02-14 | Cape Canaveral FL | (Orange and black printed) cachet on cover | Syncom-1 launch |
| United States | 1963-02-14 | Cape Canaveral FL | (Harry A. Gordon sticker and red rubber-stamp) cachet on (airmail) cover | Syncom-1 launch |
| United States | 1963-02-14 | Cape Canaveral FL (machine cancel) | (Sarzin) cachet on cover | Syncom-1 launch |
| United States | 1963-02-14 | Cape Canaveral FL (hand cancel) | (Sarzin) cachet on cover | Syncom-1 launch |
| United States | 1963-02-14 | Cape Canaveral FL | (Black printed) cachet on cover | Syncom-1 launch |
| United States | 1963-02-14 | Cape Canaveral FL | (Orbit Covers, no logo) cachet on cover | Syncom-1 launch |
| United States | 1963-02-14 | Cape Canaveral FL (hand cancel) | (SpaceCraft) cachet on cover, also insert | Syncom-1 launch |
| United States | 1963-02-14 | Cape Canaveral FL (machine cancel) | (SpaceCraft) cachet on cover, also insert | Syncom-1 launch |
| United States | 1963-02-14 | Patrick AFB, FL | (SpaceCraft) cachet on cover, also insert | Syncom-1 launch |
| United States | 1963-02-14 | Cape Canaveral FL (hand cancel) | (Rank velvet) cachet on cover | Syncom-1 launch |
| United States | 1963-02-14 | Cape Canaveral FL (machine cancel) | (Rank velvet) cachet on cover | Syncom-1 launch |
| United States | 1963-02-14 | Satellite Beach FL | (Rank velvet) cachet on cover | Syncom-1 launch |
| United States | 1963-02-14 | Cape Canaveral FL (hand cancel) | (Centennial dark-blue earth) cachet on cover | Syncom-1 launch (Relay, Vanguard-2, Pioneer-3/4 type, Explorer-1, TIROS/ESSA type depicted) |
| United States | 1963-02-14 | Cape Canaveral FL (machine cancel) | (Centennial dark-blue earth) cachet on cover | Syncom-1 launch (Relay, Vanguard-2, Pioneer-3/4 type, Explorer-1, TIROS/ESSA type depicted) |
| United States | 1963-02-14 | Cape Canaveral FL | (blank/no) cachet on cover | Syncom-1 launch |
| United States | 1963-02-14 | Cape Canaveral FL | (Swanson black rubber-stamp) cachet on cover | Syncom-1 launch |
| United States | 1963-02-14 | Cape Canaveral FL | (Swanson purple and black rubber-stamp) cachet on cover | Syncom-1 launch |
| United States | 1963-02-14 | Cape Canaveral FL | (Swanson purple and black rubber-stamp) cachet on (airmail) cover | Syncom-1 launch |
| United States | 1963-02-14 | Cape Canaveral FL | (Goldcraft) cachet on cover | Syncom-1 launch |
| United States | 1963-02-14 | Cape Canaveral FL | (Red and blue rubber-stamp and black typed) cachet on cover | Syncom-1 launch |
| Syncom-1 (anniversaries) | ||||
| Romania | 1988-02-14 | Alba-Iulia | (Pictorial) cancel and (blue printed) cachet on cover | 25th anniv. Syncom-1 launch |
| 1963-07-26: Syncom-23 | ||||
| United States | 1963-07-25 | Cape Canaveral FL | (Sarzin metallic) cachet on cover | Syncom-2 launch (Syncom publicity image1) |
| United States | 1963-07-26 | Cape Canaveral FL | (SpaceCraft) cachet on cover, also insert | Syncom-2 launch |
| United States | 1963-07-26 | Patrick AFB, FL | (SpaceCraft) cachet on cover, also insert | Syncom-2 launch |
| United States | 1963-07-26 | Cape Canaveral FL | (Black printed) cachet on cover | Syncom-2 launch |
| United States | 1963-07-26 | Cape Canaveral FL | (Centennial) cachet on cover | Syncom-2 launch |
| United States | 1963-07-26 | Cape Canaveral FL (machine cancel) | (Rank velvet) cachet on cover | Syncom-2 launch |
| United States | 1963-07-26 | Cape Canaveral FL (hand cancel) | (Rank velvet) cachet on cover | Syncom-2 launch |
| United States | 1963-07-26 | Satellite Beach FL | (Rank purple and green) cachet on cover | Syncom-2 launch |
| United States | 1963-07-26 | Satellite Beach FL | (Rank purple and grey) cachet on cover | Syncom-2 launch |
| United States | 1963-07-26 | Cape Canaveral FL | (Orbit Covers, no logo) cachet on cover | Syncom-2 launch |
| United States | 1963-07-26 | Cape Canaveral FL | (Swanson/DuBeau? black and cyan and magenta rubber-stamp) cachet on cover | Syncom-2 launch |
| United States | 1963-07-26 | Cape Canaveral FL | (Swanson/DuBeau? purple and cyan and magenta rubber-stamp) cachet on cover | Syncom-2 launch |
| United States | 1963-07-26 | Cape Canaveral FL | (Swanson/DuBeau? purple and cyan and magenta rubber-stamp) cachet (slightly different arrangement) on cover | Syncom-2 launch |
| United States | 1963-07-26 | Cape Canaveral FL | (Swanson/DuBeau? purple and cyan rubber-stamp) cachet on cover | Syncom-2 launch |
| United States | 1963-07-26 | Cape Canaveral FL | (Goldcraft Cachets) cachet on cover | Syncom-2 launch |
| United States | 1963-07-26 | Cape Canaveral FL | (Jim Fitzpatrick magenta rubber-stamp) cachet on cover | Syncom-2 launch |
| United States | 1963-07-26 1964-08-19 | Cape Canaveral FL Satellite Beach FL | (Rank) cachet on cover | Syncom-2 launch Syncom-3 launch |
| United States | 1963-07-26 1964-08-19 | Cape Canaveral FL Satellite Beach FL | (Rank, different) cachet on cover | Syncom-2 launch Syncom-3 launch |
| United States | 1963-07-26 1964-08-19 | Cape Canaveral FL Satellite Beach FL | (Rank velvet) cachet on cover | Syncom-2 launch Syncom-3 launch |
| United States | 1963-07-26 1964-08-19 | Cape Canaveral FL Satellite Beach FL | (Rank, based on a Boudwin rubber-stamp design) cachet on cover | Syncom-2 launch Syncom-3 launch |
| United States | 1963-07-26 1964-08-19 | Satellite Beach FL Satellite Beach FL | (Rank, based on a Swanson rubber-stamp design) cachet on cover | Syncom-2 launch Syncom-3 launch |
| Syncom-2 (events) | ||||
| United States | 1965-03-23 | Satellite Beach FL | (Rank velvet) cachet on cover | Syncom-2: "1st astronaut communications by satellite" |
| Syncom-2 (anniversaries) | ||||
| Italy | 2003-07-26 | Rome | (Pictorial) cancel | 40th anniv. Syncom-2 launch |
| 1964-08-19: Syncom-34 | ||||
| United States | 1964-08-19 | Cape Canaveral FL | (SpaceCraft) cachet on cover, also insert | Syncom-3 launch |
| United States | 1964-08-19 | Cape Canaveral FL | (SpaceCraft) cachet (and signatures) on cover, also insert | Syncom-3 launch |
| United States | 1964-08-19 | Patrick AFB, FL | (SpaceCraft) cachet on cover | Syncom-3 launch |
| United States | 1964-08-19 | Cape Canaveral FL | (Sarzin) cachet on cover | Syncom-3 launch (TIROS depicted) |
| United States | 1964-08-19 | Cape Canaveral FL (hand cancel) | (Sarzin?) cachet on cover | Syncom-3 launch (Syncom publicity image1) |
| United States | 1964-08-19 | Cape Canaveral FL (machine cancel) | (Sarzin?) cachet on cover | Syncom-3 launch (Syncom publicity image1) |
| United States | 1964-08-19 | Satellite Beach FL | (Goldcraft Cachets) cachet on cover | Syncom-3 launch |
| United States | 1964-08-19 | Cape Canaveral FL | (C. Swanson/DuBeau? purple rubber-stamp) cachet on cover | Syncom-3 launch |
| United States | 1964-08-19 | Cape Canaveral FL | (Centennial black earth) cachet on cover | Syncom-3 launch (Relay, Vanguard-2, Pioneer-3/4 type, Explorer-1, TIROS/ESSA type depicted) |
| United States | 1964-08-19 | Cape Canaveral FL | Harry A. Gordon sticker and purple rubber-stamp) cachet on (airmail) cover | Syncom-3 launch |
| United States | 1964-08-19 1962-06-23 | Satellite Beach FL Tokyo Olympics Fund Drive - Tokyo | (Rank velvet) cachet on cover | Syncom-3 launch Japan B15 FDC |
| United States | 1964-08-19 1962-06-23 | Satellite Beach FL Tokyo Olympics Fund Drive - Tokyo | (Black printed) cachet on cover | Syncom-3 launch Japan B16 FDC |
| United States | 1964-08-19 1962-06-23 | Satellite Beach FL Tokyo Olympics Fund Drive - Tokyo | (blank/no) cachet on cover | Syncom-3 launch Japan B16 FDC |
| United States | 1964-08-19 1963-07-26 | Satellite Beach FL Cape Canaveral FL | (Rank) cachet on cover | Syncom-3 launch Syncom-2 launch |
| United States | 1964-08-19 1963-07-26 | Satellite Beach FL Cape Canaveral FL | (Rank, different) cachet on cover | Syncom-3 launch Syncom-2 launch |
| United States | 1964-08-19 1963-07-26 | Satellite Beach FL Cape Canaveral FL | (Rank velvet) cachet on cover | Syncom-3 launch Syncom-2 launch |
| United States | 1964-08-19 1963-07-26 | Satellite Beach FL Cape Canaveral FL | (Rank, based on a Boudwin rubber-stamp design) cachet on cover | Syncom-3 launch Syncom-2 launch |
| United States | 1964-08-19 1963-07-26 | Satellite Beach FL Satellite Beach FL | (Rank, based on a Swanson rubber-stamp design) cachet on cover | Syncom-3 launch Syncom-2 launch |
| Syncom-3 (events) | ||||
| United States Japan Japan | 1964-10-10 1962-10-10 1962-10-10 | Satellite Beach FL Tokyo Tokyo Olympics Fund Drive - Tokyo | (Rank velvet) cachet on cover | "Tokyo Olympics 1964 opening day on TV by Syncom[-3]" (left-hand cancel) Japan B18-B20 FDC (center and right-hand cancels) |
| United States | 1964-10-10 | Cape Canaveral FL | (Orbit Covers, no logo) cachet on cover | "1964 Olympic Games via Syncom-III" |
| Syncom-3 (anniversaries) | ||||
| Austria | 1968-08-19 | Vienna | (Green and blue printed) cachet on cover, also back | 4th anniv. Syncom-3 launch 8th anniv. Sputnik-5 launch |
| Romania | 1989-08-19 | Botosani | (Pictorial) cancel and (blue and black printed) cachet on cover | 25th anniv. Syncom-3 launch |
| 1984-08-30: Syncom-4-2 / Leasat-F1 (and Telstar-3C and SBS-4 from STS-16 (41D)) | ||||
| United States | 1984-08-09 | Kennedy Space Center FL | (Centennial) cachet on cover | STS-41D second rollout |
| Ascension Island | 1984-08-30 | Ascension | (Space Voyage purple and red) cachet on cover | STS-41D launch; SBS-4 deployed |
| Chile | 1984-08-30 | Santiago | (Space Voyage brown and red) cachet on cover | STS-41D launch; SBS-4 deployed |
| United States | 1984-08-30 | Cape Canaveral FL | (Colorano silk) cachet on cover | STS-41D launch; SBS-4 deployed |
| United States | 1984-08-30 | Houston TX | (Colorano silk) cachet on cover | STS-41D launch; SBS-4 deployed |
| United States | 1984-08-30 | Kennedy Space Center FL | (Titusville Moonport Stamp Club black rubber-stamp) cachet on cover | STS-41D launch; SBS-4 deployed |
| United States | 1984-08-30 | Kennedy Space Center FL | (Quadracolor?) cachet on cover | STS-41D launch; SBS-4 deployed ("SB-4" in text) |
| United States | 1984-08-30 | Kennedy Space Center FL | (KSC Philatelic Society) cachet on cover | STS-41D launch; SBS-4 deployed |
| United States | 1984-08-30 | Kennedy Space Center FL | (Centennial) cachet on cover | STS-41D launch; SBS-4 deployed |
| United States | 1984-08-30 | Cape Canaveral FL | (Red and magenta and black rubber-stamp) cachet on cover | STS-41D launch; SBS-4 deployed |
| United States | 1984-08-30 | Kennedy Space Center FL | (Brown and magenta and black rubber-stamp) cachet (and signatures) on cover | STS-41D launch; SBS-4 deployed |
| United States | 1984-08-30 | Las Cruces NM | (Magenta rubber-stamp) cachet (and signature) on cover | STS-41D launch; SBS-4 deployed |
| United States | 1984-08-30 | Greenbelt MD | (GSFC Shuttle Tracking Team blue rubber-stamp) cachet on cover | STS-41D launch; SBS-4 deployed |
| United States | 1984-08-30 | Kennedy Space Center FL | (Signature only) cachet on cover | STS-41D launch; SBS-4 deployed |
| United States | 1984-08-30 | Kennedy Space Center FL | (Centennial-like) cachet on cover | STS-41D launch; SBS-4 deployed |
| United States | 1984-08-30 | Kennedy Space Center FL | (Centennial-like) cachet (different) on cover | STS-41D launch; SBS-4 deployed |
| United States | 1984-08-30 | Omaha NE | (Blue rubber-stamp) cachet on cover | STS-41D launch; SBS-4 deployed |
| United States | 1984-08-30 1981-05-21 | Kennedy Space Center FL Kennedy Space Center FL | (First Rank/Space Voyage) cachet on cover | STS-41D launch; SBS-4 deployed USA 1917 FDC |
| United States | 1984-08-30 1984-08-31 | Kennedy Space Center FL Houston TX | (Hughes mission patch) cachet on cover | STS-41D launch; SBS-4 deployed Leasat-F1 (Syncom-4-2) deployed |
| United States | 1984-08-30 1984-09-01 | Kennedy Space Center FL Houston TX | (Mission patch/AT&T) cachet on cover | STS-41D launch; SBS-4 deployed Telstar-3C deployed |
| United States | 1984-08-31 | Houston TX | (Zaso silk/IASP no.79) cachet on cover | Leasat-F1 (Syncom-4-2, not "Syncom-4-1", as in text) deployed |
| United States | 1984-08-31 | Kennedy Space Center FL | (Colorano silk) cachet on cover | Leasat-F1 (Syncom-4-2) deployed |
| United States | 1984-08-31 | Kennedy Space Center FL | (Centennial) cachet on cover | Leasat-F1 (Syncom-4-2) deployed |
| United States | 1984-08-31 | Kennedy Space Center FL | (Quadracolor?) cachet on cover | Leasat-F1 (Syncom-4-2) deployed |
| United States | 1984-09-01 | Kennedy Space Center FL | (Blue and red printed and magenta rubber-stamp) cachet on cover | Telstar-3C deployed |
| United States | 1984-09-01 | Cape Canaveral FL | (Colorano silk) cachet on cover | Telstar-3C deployed |
| United States | 1984-09-01 | Cape Canaveral FL | (Colorano silk) cachet (and signatures) on cover | Telstar-3C deployed |
| United States | 1984-09-01 | Kennedy Space Center FL | (Hughes black rubber-stamp) cachet on cover | Telstar-3C deployed |
| United States | 1984-09-01 | Cape Canaveral FL | (Centennial) cachet on cover | Telstar-3C deployed |
| United States | 1984-09-01 | Houston TX | (Colorano silk) cachet on cover | "OAST-1 solar array unfolded" |
| United States | 1984-09-01 | Houston TX | (Zaso silk/IASP no.80) cachet on cover | "the 1st extension test of the Advanced Solar Array Technology Panel (OAST-1)" and "AT&T's Telstar-3B/Skynet satellite was deployed today" (should be Telstar-3C, not "Telstar-3B") |
| Chile | 1984-09-05 | Santiago | (Blue and red rubber-stamp) cachet on cover | STS-41D landing |
| Japan | 1984-09-05 | Kadena, Okinawa | (Space Voyage black and red) cachet on cover | STS-41D landing |
| United States | 1984-09-05 | WSMR Branch, NM | (Space Voyage blue and red) cachet on cover | STS-41D landing |
| United States | 1984-09-05 | Edwards AFB, CA | (Colorano silk) cachet on cover | STS-41D landing |
| United States | 1984-09-05 | Edwards AFB, CA | (RSDSC) cachet on cover, also insert and insert back | STS-41D landing |
| United States | 1984-09-05 | Edwards AFB, CA | (Black and magenta rubber-stamp) cachet (and signatures) on (airmail) cover | STS-41D landing |
| United States | 1984-09-05 | Greenbelt MD | (GSFC Shuttle Tracking Team blue rubber-stamp) cachet on cover | STS-41D landing |
| United States | 1984-09-05 | Edwards AFB, CA | (Red and blue printed) cachet on cover | STS-41D landing |
| 1984-11-08: Syncom-4-1 / Leasat-F2 (and Anik-D2 and Westar-6 recovered and Palapa-B2 recovered from STS-19 (51A)) | ||||
| Ascension Island | 1984-11-08 | Ascension | (Space Voyage) cachet on cover | STS-51A launch |
| United States | 1984-11-08 | Houston TX | (Dark green printed) cachet on cover | STS-51A launch |
| United States | 1984-11-08 | Houston TX | (SCCS) cachet on cover | STS-51A launch |
| United States | 1984-11-08 | Kennedy Space Center FL | (Zaso silk/IASP no.86) cachet on cover | STS-51A launch |
| United States | 1984-11-08 | Kennedy Space Center FL | (Quadracolor?) cachet on cover | STS-51A launch |
| United States | 1984-11-08 | Kennedy Space Center FL | (Quadracolor?) cachet (different) on cover | STS-51A launch |
| United States | 1984-11-08 1983-10-22 | Kennedy Space Center FL Dearborn Heights MI | (Ranski) cachet on cover | STS-51A launch Motopex Station pictorial cancel |
| United States | 1984-11-09 | Kennedy Space Center FL | (Colorano silk) cachet on cover | Anik-D2 (Telesat-8) deployed |
| United States | 1984-11-09 | Kennedy Space Center FL | (Titusville-Moonport Stamp Club) cachet on cover | Anik-D2 ("Telesat-H" / Telesat-8) deployed |
| United States | 1984-11-09 | Kennedy Space Center FL | (Centennial) cachet on cover | Anik-D2 ("Telesat-H" / Telesat-8) deployed |
| United States | 1984-11-09 | Houston TX | (Space Voyage) cachet on cover | Anik-D2 ("Telesat-H" / Telesat-8) deployed |
| United States | 1984-11-09 | Houston TX | (SCCS) cachet on cover | Anik-D2 ("Telesat-H" / Telesat-8) deployed |
| United States | 1984-11-09 | Kennedy Space Center FL | (Quadracolor?) cachet on cover | Anik-D2 (Telesat-8) deployed |
| United States | 1984-11-09 | Kennedy Space Center FL | (Ranski and purple rubber-stamp) cachet on cover | Anik-D2 (Telesat-8) deployed |
| United States | 1984-11-10 | Houston TX | (Colorano silk) cachet on cover | Leasat-F2 (Syncom-4-1) deployed |
| United States | 1984-11-10 | Houston TX | (SCCS) cachet on cover | Leasat-F2 (Syncom-4-1) deployed |
| United States | 1984-11-10 | Kennedy Space Center FL | (Titusville-Moonport Stamp Club) cachet on cover | Leasat-F2 (Syncom-4-1) deployed |
| United States | 1984-11-10 | Cape Canaveral FL | (Centennial) cachet on cover | Leasat-F2 (Syncom-4-1) deployed |
| United States | 1984-11-10 | Cape Canaveral FL | (Ranski and red rubber-stamp) cachet on cover | Leasat-F2 (Syncom-4-1) deployed |
| United States | 1984-11-12 | Cape Canaveral FL | (Colorano silk) cachet on cover | Palapa-B2 recovered |
| United States | 1984-11-12 | Kennedy Space Center FL | (Mission patch) cachet on cover | Palapa-B2 recovered |
| United States | 1984-11-12 | Houston TX | (Zaso silk/IASP no.87) cachet on cover | Palapa-B2 recovered |
| United States | 1984-11-12 | Cape Canaveral FL | (Centennial) cachet on cover | Palapa-B2 recovered |
| United States | 1984-11-12 | Houston TX | (SCCS) cachet on cover | Palapa-B2 recovered |
| United States | 1984-11-12 | Houston TX | (Space Voyage) cachet on cover | Palapa-B2 recovered |
| United States | 1984-11-12 | Cape Canaveral FL | (Ranski and cyan and tan rubber-stamp) cachet on cover | Palapa-B2 recovered |
| United States | 1984-11-12 1984-02-06 | Houston TX Houston TX | (SCCS) cachet on cover | Palapa-B2 recovered Palapa-B2 deployed |
| United States | 1984-11-13 | Kennedy Space Center FL | (Quadracolor?) cachet on cover | Palapa-B2 recovered |
| United States | 1984-11-14 | Kennedy Space Center FL | (Titusville-Moonport Stamp Club/mission patch) cachet on cover | Westar-6 recovered |
| United States | 1984-11-14 | Kennedy Space Center FL | (Quadracolor?) cachet on cover | Westar-6 recovered |
| United States | 1984-11-14 | Kennedy Space Center FL | (Quadracolor?) cachet (different) on cover | Westar-6 recovered, as seen here and here |
| United States | 1984-11-14 | Kennedy Space Center FL | (Quadracolor?) cachet (different) on cover | Westar-6 recovered |
| United States | 1984-11-14 | Kennedy Space Center FL | (Quadracolor?) cachet (different) on cover | Westar-6 recovered |
| United States | 1984-11-14 | Houston TX | (Black printed) cachet on cover | Westar-6 recovered |
| United States | 1984-11-14 | Kennedy Space Center FL | (Ranski) cachet on cover | Westar-6 recovered |
| United States | 1984-11-15 | Kennedy Space Center FL | (Quadracolor?) cachet on cover | Post-retrieval photographs of the captured Palapa-B2 and Westar-6 satellites stowed in Discovery's cargo bay |
| United States | 1984-11-16 | Kennedy Space Center FL | (Zaso silk/IASP no.89) cachet on cover | STS-51A landing |
| United States | 1984-11-16 | Kennedy Space Center FL | (Quadracolor?) cachet on cover | STS-51A landing |
| 1985-04-12: Syncom-4-3 / Leasat-F3 (and Anik-C1 from STS-23 (51D)) | ||||
| United States | 1985-04-12 | Cape Canaveral FL | (Colorano silk) cachet on cover | STS-51D launch; Anik-C1 ("Telesat-I" / Telesat-9) deployed |
| United States | 1985-04-12 | Cape Canaveral FL | (Centennial) cachet on cover | STS-51D launch; Anik-C1 ("Telesat-I" / Telesat-9) deployed |
| United States | 1985-04-12 | Houston TX | (SCCS) cachet on cover | STS-51D launch; Anik-C1 ("Telesat-I" / Telesat-9) deployed |
| United States | 1985-04-12 | Kennedy Space Center FL | (Magenta and yellow-orange rubber-stamp) cachet on cover | STS-51D launch; Anik-C1 ("Telesat"-9) deployed |
| United States | 1985-04-12 | Las Cruces NM | (Magenta rubber-stamp) cachet (and signature) on cover | STS-51D launch; Anik-C1 (Telesat-9) deployed (but TDRS depicted) |
| United States | 1985-04-12 | Cape Canaveral FL | (Whitney black and purple) cachet on cover | STS-51D launch; Anik-C1 (Telesat-9) deployed |
| United States | 1985-04-12 | Cape Canaveral FL | (Colorano silk) cachet on cover | STS-51D launch; Anik-C1 (Telesat-9) deployed |
| United States | 1985-04-12 | Houston TX, Nassau Bay Branch | (Yellow and black printed/sticker) cachet on cover | STS-51D launch; Anik-C1 (Telesat-9) deployed |
| United States | 1985-04-12 | Kennedy Space Center FL | (Quadracolor?) cachet on cover | STS-51D launch; Anik-C1 (Telesat-9) deployed (but "Leasat / Syncom-IV" in text) |
| United States | 1985-04-12 | Kennedy Space Center FL | (Quadracolor?) cachet (different) on cover | STS-51D launch; Anik-C1 (Telesat-9) deployed (but "Syncom-IV / Leasat" in text) |
| United States | 1985-04-12 | Kennedy Space Center FL | (Ranski) cachet on cover | STS-51D launch; Anik-C1 (Telesat-9) deployed |
| United States Canada | 1985-04-12 1976-06-18 | Houston TX Montréal CA | (First Rank/Space Voyage) cachet on cover | STS-51D launch; Anik-C1 ("Telesat-I" / Telesat-9) deployed Canada 681 FDC |
| United States | 1985-04-12 1984-10-05 | Houston TX Kennedy Space Center FL | (First Rank/Space Voyage) cachet on cover | STS-51D launch; Anik-C1 (Telesat-9) deployed STS-41G launch; ERBS deployed |
| United States | 1985-04-13 | Houston TX | (Colorano silk) cachet on cover | Leasat-F3 (Syncom-4-3) deployed |
| United States | 1985-04-13 | Houston TX | (Red and black printed) cachet on cover | Leasat-F3 (Syncom-4-3) deployed |
| United States | 1985-04-13 | Houston TX | (SCCS) cachet on cover | Leasat-F3 (Syncom-4-3) deployed |
| United States | 1985-04-13 | Cape Canaveral FL | (Centennial) cachet on cover | Leasat-F3 (Syncom-4-3) deployed |
| United States | 1985-04-13 | Cape Canaveral FL | (Yellow and black printed/sticker) cachet on cover | Leasat-F3 (Syncom-4-3) deployed |
| United States | 1985-04-16 | Houston TX | (Space Voyage) cachet on cover | (First) Leasat-F3 (Syncom-4-3) switch-on attempt (on April 16); second switch-on attempt (on April 17 in cachet text) |
| United States | 1985-04-16 | Kennedy Space Center FL | (Zaso/IASP no.94) cachet on cover | (First) Leasat-F3 (Syncom-4-3) switch-on attempt |
| United States | 1985-04-17 | Cape Canaveral FL | (Colorano silk) cachet on cover | (Second) Leasat-F3 (Syncom-4-3) switch-on attempt |
| United States | 1985-04-17 | Cape Canaveral FL | (Black-on-yellow sticker) cachet on cover | (Second) Leasat-F3 (Syncom-4-3) switch-on attempt |
| United States | 1985-04-17 | Kennedy Space Center FL | (Mission patch) cachet on cover | (Second) Leasat-F3 (Syncom-4-3) switch-on attempt |
| United States | 1985-04-19 | Kennedy Space Center FL | (Zaso silk/IASP no.96) cachet on cover | STS-51D landing |
| United States | 1985-04-19 | Kennedy Space Center FL | (Ranski) cachet on cover | STS-51D landing |
| 1985-08-27: Syncom-4-4 / Leasat-F4 and Syncom-4-3 / Leasat-F3 repair (and Aussat-A1 and ASC-1 from STS-27 (51I)) | ||||
| Australia | 1985-08-24 (the year "85" is inverted) | Tharwa ACT | (Green and purple rubber-stamp) cachet on (airmail) cover | STS-51I pre-launch tracking |
| United States | 1985-08-27 | Houston TX | (SCCS) cachet on cover | STS-51I launch; Aussat-A1 deployed; ASC-1 deployed |
| United States | 1985-08-27 | Cape Canaveral FL | (Colorano silk) cachet on cover | STS-51I launch; Aussat-A1 deployed; ASC-1 deployed |
| United States | 1985-08-27 | Kennedy Space Center FL | (Quadracolor?) cachet on cover | STS-51I launch; Aussat-A1 deployed; ASC-1 deployed |
| United States | 1985-08-27 | Kennedy Space Center FL | (Zaso silk/IASP no.110) cachet on cover | STS-51I launch; Aussat-A1 deployed; ASC-1 deployed |
| United States | 1985-08-27 | Cape Canaveral FL | (Colorano silk) cachet on cover | STS-51I launch; Aussat-A1 deployed; ASC-1 deployed |
| United States | 1985-08-27 | Kennedy Space Center FL | (Zaso silk/IASP no.111) cachet on cover | STS-51I launch; Aussat-A1 deployed; ASC-1 deployed |
| United States | 1985-08-27 | Kennedy Space Center FL | (Space Voyage) cachet on cover | STS-51I launch; Aussat-A1 deployed; ASC-1 deployed |
| United States | 1985-08-27 | Kennedy Space Center FL | (RSDSC) cachet on cover, also insert and insert back | STS-51I launch; Aussat-A1 deployed; ASC-1 deployed |
| United States | 1985-08-27 | Greenbelt MD | (GSFC Stamp Club) cachet on cover | STS-51I launch; Aussat-A1 deployed; ASC-1 deployed |
| United States | 1985-08-27 | Kennedy Space Center FL | (KSC Philatelic Society) cachet on cover | STS-51I launch; Aussat-A1 deployed; ASC-1 deployed |
| United States | 1985-08-27 | Kennedy Space Center FL | (Centennial) cachet on cover | STS-51I launch; Aussat-A1 deployed; ASC-1 deployed |
| United States | 1985-08-27 | Cape Canaveral FL | (Centennial) cachet on cover | STS-51I launch; Aussat-A1 deployed; ASC-1 deployed |
| United States | 1985-08-27 | Kennedy Space Center FL | (Quadracolor?) cachet on cover | STS-51I launch; Aussat-A1 deployed; ASC-1 deployed |
| United States | 1985-08-27 | Kennedy Space Center FL | (Ranski) cachet on cover | STS-51I launch; Aussat-A1 deployed; ASC-1 deployed |
| United States | 1985-08-27 | Kennedy Space Center FL | (Ranski) cachet (slightly different) on cover | STS-51I launch; Aussat-A1 deployed; ASC-1 deployed |
| Australia | 1985-08-28 | French's Forest NSW | (Purple rubber-stamp) cachet on cover | STS-51I launch; Aussat-A1 deployed; ASC-1 deployed (on 28 August in Australia) |
| United States | 1985-08-28 | Kennedy Space Center FL | (Quadracolor?) cachet on cover | Leasat-F4 (Syncom-4-4) deployed (on 29 August; "Aug 28" in the cancel and cachet are incorrect for this event) |
| United States | 1985-08-29 | Kennedy Space Center FL | (Hughes) cachet on cover | Leasat-F4 (Syncom-4-4) deployed |
| United States | 1985-08-29 | Kennedy Space Center FL | (Colorano silk) cachet on cover | Leasat-F4 (Syncom-4-4) deployed |
| United States | 1985-08-29 | Kennedy Space Center FL | (Centennial) cachet on cover | Leasat-F4 (Syncom-4-4) deployed |
| United States | 1985-08-29 | Houston TX | (Cyan and black printed) cachet on cover | Leasat-F4 (Syncom-4-4) deployed |
| United States | 1985-08-29 | Houston TX, Nassau Bay Branch | (Blue rubber-stamp and black typed) cachet on cover | Leasat-F4 (Syncom-4-4) deployed |
| United States | 1985-08-29 1985-09-09 | Houston TX Houston TX | (SCCS) cachet on cover | Leasat-F4 (Syncom-4-4) deployed Leasat-F4 (Syncom-4-4) declared lost5 |
| United States | 1985-08-31 | Cape Canaveral FL | (Centennial) cachet on cover | STS-51I first EVA (Leasat-F3 (Syncom-4-3) recovered) |
| United States | 1985-09-01 | Houston TX, Nassau Bay Branch | (Black-on-yellow sticker and black printed) cachet on cover | Leasat-F3 (Syncom-4-3) repaired and deployed |
| United States | 1985-09-01 | Houston TX, Nassau Bay Branch | (Colorano silk) cachet on cover | Leasat-F3 (Syncom-4-3) repaired and deployed; see also Abkhazia Unlisted d (1996), and Tajikistan None e (2000) |
| United States | 1985-09-01 1985-10-27 | Houston TX Houston TX | (SCCS) cachet on cover | Leasat-F3 (Syncom-4-3) repaired and deployed Leasat-F3 (Syncom-4-3) operational |
| United States | 1985-09-03 | Edwards CA | (Zaso silk/IASP no.112) cachet on cover | STS-51I landing |
| United States | 1985-09-03 | Edwards CA | (Quadracolor?) cachet on cover | STS-51I landing |
| United States | 1985-09-03 | Edwards AFB, CA | (Mission patch) cachet on cover | STS-51I landing |
| United States | 1985-09-03 | Edwards AFB, CA | (Ranski) cachet on cover | STS-51I landing |
| United States | 1985-09-03 | Edwards AFB, CA | (Ranski) cachet (different) on cover | STS-51I landing |
| 1990-01-09: Syncom-4-5 / Leasat-F5 (and LDEF recovered from STS-32R) | ||||
| United States | 1990-01-09 | Kennedy Space Center FL | (Titusville-Moonport Stamp Club/mission patch) cachet on cover, and insert | STS-32R launch |
| United States | 1990-01-09 | Kennedy Space Center FL | (Mission patch) cachet on cover, also insert | STS-32R launch |
| United States | 1990-01-09 | Houston TX | (Colorano silk) cachet on cover | STS-32R launch |
| United States | 1990-01-09 | Houston TX | (NASA crew photo) cachet on cover | STS-32R launch |
| United States | 1990-01-09 | Kennedy Space Center FL | (Black rubber-stamp) cachet on cover | STS-32R launch |
| United States | 1990-01-09 1990-01-26 | Kennedy Space Center FL (machine cancel) Kennedy Space Center FL (hand cancel) | (Mission-patch sticker) cachet on cover | STS-32R launch STS-32R transported back to KSC |
| United States | 1990-01-10 | Kennedy Space Center FL | (Titusville-Moonport Stamp Club) cachet on cover | Leasat-F5 (Syncom-4-5) deployed |
| United States | 1990-01-10 | Houston TX | (Colorano silk) cachet on cover | Leasat-F5 (Syncom-4-5) deployed |
| United States | 1990-01-10 | Houston TX, Nassau Bay Branch | (Black printed) cachet on cover | Leasat-F5 (Syncom-4-5) deployed |
| United States | 1990-01-10 | Houston TX | (Brown and red printed) cachet on cover | Leasat-F5 (Syncom-4-5) deployed |
| United States | 1990-01-12 | Houston TX, Nassau Bay Branch | (Photo/sticker) cachet on cover | LDEF recovered |
| United States | 1990-01-12 | Houston TX | (Colorano silk) cachet on cover | LDEF recovered |
| United States | 1990-01-12 | Houston TX | (Photo/sticker and black typed) cachet on cover | LDEF recovered |
| United States | 1990-01-20 | Edwards AFB, CA | (Colorano silk) cachet on cover | STS-32R landing |
| United States | 1990-01-26 | Titusville FL, Astronaut Trail Station | (Titusville-Moonport Stamp Club) cachet on cover | STS-32R transport back to Florida |
| Syncom (on other than Syncom launch covers) | ||||
| There exist a large number of covers with an HJM cachet depicting Syncom. Details about the cachet, as well as images of the covers, are found in the HJM page. | ||||
| United States | 1965-10-25? | USNS Kingsport? | (Black printed and black rubber-stamp) cachet (and signature) on GATV-6 launch (airmail) cover, also detail | "Syncom" (in NASA/Hughes logo) |
| United States | 1967-01-11 | Patrick AFB, FL | (Sarzin) cachet on Intelsat-2-2 launch cover | Syncom publicity image1 |
| United States | 1967-11-10 | Vandenberg AFB, CA | (Sarzin) cachet on ESSA-6 launch cover | Syncom (not "ESSA-6", as in text) |
| United States | 1968-11-08 | Cape Canaveral FL | (Sarzin) cachet on Pioneer-9 and TETR-2 launch cover, also annotated | Syncom |
| United States | 1968-12-15 | Vandenberg AFB, CA | (Sarzin) cachet on ESSA-8 launch cover | Syncom (not "ESSA-8", as in text) |
| United States | 1969-02-05 | Patrick AFB, FL (hand cancel) | (SpaceCraft/Swanson) insert2 from Intelsat-3-3 launch cover, also front and insert1 | "Syncom-2" and "Syncom-3" (in text only) |
| United States | 1969-02-05 | Patrick AFB, FL (machine cancel) | (SpaceCraft/Swanson) insert2 from Intelsat-3-3 launch cover, also front and insert1 | |
| United States | 1969-02-26 | Cape Canaveral FL | (Sarzin) cachet on ESSA-9 launch cover | Syncom (not "ESSA-9", as in text) |
| Germany (West) | 1969-03-03 | Bochum | (Institut für Satelliten und Weltraumforschung Sternwarte Bochum/BRD) cachet on Apollo-9 launch/tracking cover | Syncom |
| French Guiana | 1974-10-30 | Kourou | (Lollini silk) cachet on (sub-orbital) rocket launch cover | Syncom (not "SMS", as in text) |
| United States | 1976-03-16 | Auburn MA | (GSFC Stamp Club printed) cachet on 50th anniv. first liquid fuel rocket flight/launch cover | "Syncom" |
| United States | 1978-05-20 | GSFC, MD | (GSFC blue rubber-stamp) cachet (same design as immediately above) on Pioneer-12 launch cover | "Syncom" |
| United States | 1978-10-24 | GSFC, MD | (GSFC blue rubber-stamp) cachet (same) on Nimbus-7 and CAMEO launch cover | "Syncom" |
| United States | 1983-01-25 | Greenbelt MD | (GSFC blue rubber-stamp) cachet (same) on IRAS and PIX-2 launch cover | "Syncom" |
| United States | 1986-01-12 | Houston TX | (Grey-green printed) cachet on STS-61C launch and Satcom-Ku1 deployment cover | Leasat (Syncom-4) type |
1Many Syncom images are similar to NASA's Syncom publicity photo, which does not look like any of the Syncom reference images provided. This publicity photo was created by Bob Special, a NASA technician at Cape Kennedy. The publicity photo shows a flame coming out of Syncom's apogee motor. This was probably to make the image more dramatic. Some of the stamp reproductions of the publicity photo eliminate the flame, as noted. It must also be pointed out that the real Syncom had a larger cone-shaped nozzle extending outward from the apogee motor than shown on the publicity photo.
2Pioneer-3 and 4 are basically identical.
3Syncom-2 launch newspaper article.
4Syncom-3 launch newspaper article.
5Leasat-F4 (Syncom-4-4) attained its geostationary orbit but was declared lost on 9 September 1985 after only 40 hours of operational testing due to a UHF communications system failure in the satellite.
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