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International Quiet
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International Quiet
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Below is a checklist of International Quiet Sun Year (IQSY) postal items (stamps, souvenir sheets, aerogrammes, postal cards, etc.). Catalog numbers, years of issue, and notes on the items 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.
See also the following related topic:
| 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) |
|---|---|
| International Quiet Sun Year (IQSY) (1964 — 1965) | International Quiet Sun Year (IQSY) (1964 — 1965) |
Below is a list of International Quiet Sun Year (IQSY) on postal items (stamps, souvenir sheets, aerogrammes, postal cards, etc.).
| Country | Catalog Number | Type of Item | Year of Issue | Notes on Content |
|---|---|---|---|---|
| International Quiet Sun Year (IQSY) (1964 — 1965) | ||||
| Argentina | None | (Blue printed) cachet on (airmail) cover | 1964? | IQSY logo; "IQSY 1964-1965"; National Commission for the IQSY (CNAISQ) (in Spanish text) |
| Argentina | 757-758 cover (Mi834-835 cover) | (Red and blue printed) cachet on cover | 1964 | "International Years of the Quiet Sun 1964 - 65" |
| Argentina | 772 (Mi862) | 1965 | IQSY (on stamp), but IQSY-type Sun symbol | |
| Argentina | 772 fdc | Stamp and (black printed) cachet on FDC | ||
| Argentina | C98 fdc1 | (Black printed) cachet on FDC (pictorial cancel) | ||
| Argentina | C98 fdc2 | (Black printed) cachet on FDC (text cancel) | ||
| Argentina | 772+C98-C99 fdc1 | One of three stamps on FDC | ||
| Argentina | 772+C98-C99 fdc2 | One of three stamps and (multi-color printed) cachet on FDC | ||
| Argentina | 772+C98-C99 fdc3 | One of three stamps and (multi-color printed) cachet (different) on FDC | ||
| Argentina | 772+C98-C99 fdc4 | One of three stamps and (black printed) cachet on FDC (pictorial cancel) | ||
| Argentina | 772+C98-C99 fdc5 | One of three stamps and (black printed) cachet on FDC (text cancel) | ||
| Argentina | 772+C98-C99 fdc6 | One of three stamps and (multi-color printed) cachet (different) on FDC | ||
| Argentina | 772+C98-C99 fdc7 | One of three stamps and (multi-color printed) cachet (different) on FDC | ||
| Argentina | 772+C98-C99 folder | FDC folder | ||
| Argentina | None | (Red rubber-stamp) cachet on cover | 1965 | IQSY logo |
| Argentina | None | (Red and blue rubber-stamp) cachet on cover | 1965 | IQSY 1964/65 (in Spanish text) |
| Austria | None | (Pictorial) cancel and cachet on cover | 1965 | IQSY logo, "IQSY 1964/65" (in German text) |
| Austria | None | (Pictorial) cancel on cover | 1965 | IQSY logo, "IQSY 1964/65" (in German text) |
| Austria | None | (Brown and blue printed) cachet on cover, also back | 1968 | IQSY logo |
| Australian Antarctic Territory | L2+2xL3 cover (Mi? cover) | (Red and blue printed) cachet on cover | 1964 | "International Years of the Quiet Sun 1964 - 65" |
| Australian Antarctic Territory | L6 cover (Mi? cover) | (Red and blue printed) cachet on cover | ||
| Australian Antarctic Territory | L1 cover (Mi? cover) | (Red and blue printed) cachet on cover | 1965 | "International Years of the Quiet Sun 1964 - 65" |
| Australian Antarctic Territory | L1+L5 cover (Mi? cover) | (Red and blue printed) cachet on cover | ||
| Australian Antarctic Territory | L6 cover (Mi? cover) | (Red and blue printed) cachet on cover | ||
| Australian Antarctic Territory | L1 cover (Mi? cover) | (Red and blue printed) cachet on cover | 1966 | "International Years of the Quiet Sun 1964 - 65" |
| Australian Antarctic Territory | L2 cover (Mi? cover) | (Red and blue printed) cachet on cover | ||
| Australian Antarctic Territory | L2+L4 cover (Mi? cover) | (Red and blue printed) cachet on cover | ||
| Australian Antarctic Territory | L3 cover (Mi? cover) | (Red and blue printed) cachet on cover | ||
| Belgium | 615 cover (Mi1359 cover) | (Red and blue printed) cachet on cover | 1964 | "International Years of the Quiet Sun 1964 - 65" |
| British Antarctic Territory | 1+5 cover (Mi1+5 cover) | (Red and blue printed) cachet on cover | 1966 | "International Years of the Quiet Sun 1964 - 65" |
| British Antarctic Territory | 6 cover (Mi6 cover) | (Red and blue printed) cachet on cover | ||
| Bulgaria | 1462 (Mi1589) | 1965 | ||
| Bulgaria | 1463 (Mi1590) | |||
| Bulgaria | 1464 (Mi1591) | |||
| Bulgaria | 1462-1464 fdc | Three stamps and cachet on FDC | ||
| Central African Republic | 34 (Mi57) i34 | Imperforate | 1964 | |
| Central African Republic | 34 ds | Deluxe sheet (34) | ||
| Central African Republic | 34 fdc1 | Stamp and (text) cancel and (PJ) cachet on FDC | ||
| Central African Republic | 34 fdc2 | Stamp and (text) cancel and (Éditions So.Ge.Im.) cachet on FDC | ||
| Central African Republic | 34 fdc3 | Stamp and (text) cancel and (Éditions J.F.) cachet on FDC | ||
| Cuba | 958 (Mi1020) | 1965 | ||
| Cuba | 959 (Mi1021) | |||
| Cuba | 960 (Mi1022) | |||
| Cuba | 961 (Mi1023) | |||
| Cuba | 962 (Mi1024) | |||
| Cuba | 963 (Mi1025) | |||
| Cuba | 958-960 fdc | Three stamps and (pictorial) cancel and cachet on FDC | ||
| Cuba | 961-963 fdc | Three stamps and (pictorial) cancel and cachet on FDC | ||
| Cuba | 963a (BL26) | Imperforate SS1 (963) | ||
| Cuba | 963a fdc | SS1 and (pictorial) cancel and cachet on FDC | ||
| Cuba | 963b (BL27) | Imperforate SS1, 963a with changed colors and text | This item has no direct reference to IQSY, but its design is identical to that of 963a, which does directly reference IQSY | |
| Cuba | 963b fdc | Imperforate SS1 on FDC | ||
| Czechoslovakia | 1289 (Mi1515) | 1965 | ||
| Czechoslovakia | 1290 (Mi1516) | |||
| Czechoslovakia | 1289-1290 fdc | Two stamps and (pictorial) cancel and cachet on FDC | ||
| Dahomey | 196 (Mi244) i196 | Imperforate | 1964 | |
| Dahomey | 196 fdc | Stamp and (text) cancel and (PJ) cachet on FDC | ||
| Dahomey | 197 (Mi245) i197 | Imperforate | ||
| Dahomey | 197 fdc | Stamp and (text) cancel and (PJ) cachet on FDC | ||
| Dahomey | 196-197 fdc1 | Two stamps and (text) cancel and (Éditions So.Ge.Im.) cachet on FDC | ||
| Dahomey | 196-197 fdc2 | Two stamps and (text) cancel and (Éditions J.F.) cachet on FDC | ||
| Estonia | None | (TKK black and red printed) cachet on cover | 1964 | IQSY-type Sun symbol and IQSY (in text) |
| French Southern and Antarctic Territories | 23 (Mi28) | 1963 | This stamp2 has an indirect relationship to the IQSY | |
| French Southern and Antarctic Territories | 24 (Mi29) | |||
| French Southern and Antarctic Territories | 24 proof | Color proof | ||
| French Southern and Antarctic Territories | 24 proofs | Color proof strip | ||
| French Southern and Antarctic Territories | C6 (Mi30) | |||
| French Southern and Antarctic Territories | 24+C6 fdc1 | Two stamps and (PJ green) cachet on FDC | ||
| French Southern and Antarctic Territories | 24+C6 fdc2 | Two stamps and (PJ blue) cachet on FDC | ||
| French Southern and Antarctic Territories | 24+C6 fdc3 | Two stamps and (Éditions J.F.) cachet on FDC | ||
| Gabon | 179 (Mi215) | 1965 | ||
| Gabon | 179 fdc1 | Stamp and (text) cancel and (Éditions J.F.) cachet on FDC | ||
| Gabon | 179 fdc2 | Stamp and (text) cancel and (Éditions So.Ge.Im.) cachet on FDC | ||
| Gabon | 179 fdc3 | Stamp and (text) cancel and (PJ) cachet on FDC | ||
| Germany (East) | 745 (BL20, Mi1081) | SS1 | 1964 | |
| Germany (East) | 745 fdc1 | SS1 and (pictorial) cancel and cachet on FDC | ||
| Germany (East) | 745 card | SS1 and (pictorial) cancel and cachet on FDC card, also back | ||
| Germany (East) | 746 (BL21, Mi1082) | SS1 | ||
| Germany (East) | 746 fdc | SS1 and (pictorial) cancel and cachet on FDC | ||
| Germany (East) | 746 card | SS1 and (pictorial) cancel and cachet on FDC card, also back | ||
| Germany (East) | 747 (BL22, Mi1083) | SS1 | ||
| Germany (East) | 747 fdc | SS1 and (pictorial) cancel and cachet on FDC | ||
| Germany (East) | 747 card | SS1 and (pictorial) cancel and cachet on FDC card, also back | ||
| Germany (West) | None | (Black and red pictorial) cancels and (ISQY logo and Russia 2841) cachets on cover | 1964 | IQSY logo |
| Germany (West) | None | (Black pictorial) cancel and (IQSY logo) cachet on cover | 1964 | IQSY logo |
| Germany (West) | None | (Black pictorial) cancel and cachet on cover | 1964 | |
| Ghana | 164 (Mi170A) i164 (Mi170B) | Imperforate | 1964 | |
| Ghana | 165 (Mi171A) i165 (Mi171B) | Imperforate | ||
| Ghana | 166 (Mi172A) i166 (Mi172B) | Imperforate | ||
| Ghana | 164-166 fdc | Three stamps and (Ghana Philatelic Agency) cachet on FDC | ||
| Ghana | 166a (BL9) | Imperforate MS4 (4x 166) | ||
| Ghana | 166a fdc | Imperforate MS4 and (Ghana Philatelic Agency) cachet on FDC | ||
| Ghana | 186 (Mi185A) i186 (Mi185B) | From MS12 (186a (12x 186)) From imperforate MS12 (i186a (12x i186)) | 1964 | |
| Ghana | 187 (Mi186A) i187 (Mi186B) | From MS12 (187a (12x 187)) From imperforate MS12 (i187a (12x i187)) | ||
| Ghana | 188 (Mi187A) i188 (Mi187B) | From MS12 (188a (12x 188)) From imperforate MS12 (i188a (12x i188)) | ||
| Hungary | 1659 (Mi2101A) i1659 (Mi2101B) | Imperforate | 1965 | |
| Hungary | 1660 (Mi2102A) i1660 (Mi2102B) | Imperforate | ||
| Hungary | 1661 (Mi2103A) i1661 (Mi2103B) | Imperforate | ||
| Hungary | 1662 (Mi2104A) i1662 (Mi2104B) | Imperforate | ||
| Hungary | 1663 (Mi2105A) i1663 (Mi2105B) | Imperforate | ||
| Hungary | 1664 (Mi2106A) i1664 (Mi2106B) | Imperforate | ||
| Hungary | 1665 (Mi2107A) i1665 (Mi2107B) | Imperforate | ||
| Hungary | 1659+1661+1666-1667 fdc i1659+i1661+i1666-i1667 fdc | Four stamps and cachet on FDC Four imperforate stamps and cachet on FDC | ||
| Hungary | 1660+1662-1665 fdc i1660+i1662-i1665 fdc | Five stamps and cachet on FDC Five imperforate stamps and cachet on FDC | ||
| Hungary | 1666 (Mi2108A) i1666 (Mi2108B) | Imperforate | ||
| Hungary | 1667 (Mi2109A) i1667 (Mi2109B) | Imperforate | ||
| Hungary | 1668 (BL46A, Mi2110) i1668 (BL46B) | SS1 Imperforate SS1 | ||
| Hungary | 1668 fdc i1668 fdc | SS1 and cachet on FDC Imperforate SS1 and FDC cancel | ||
| Hungary | 1668 cover (BL64A cover) | SS1 and cachet on cover | 1965 | |
| Italy | None | (Black printed) cachet on (airmail) cover back | 1963 | IQSY logo |
| Maldive Islands | 147 (Mi147) | 1965 | "International Quiet Sun Years" | |
| Maldive Islands | 147a | MS9 (9x 147) | ||
| Maldive Islands | 148 (Mi148) | |||
| Maldive Islands | 148a | MS9 (9x 148) | ||
| Maldive Islands | 149 (Mi149) | |||
| Maldive Islands | 149a | MS9 (9x 149) | ||
| Maldive Islands | 150 (Mi150) | |||
| Maldive Islands | 150a | MS9 (9x 150) | ||
| Maldive Islands | 147-150 fdc | Four stamps on FDC | ||
| Mali | 65 (Mi90) | 1964 | ||
| Mali | 65 fdc1 | Stamp and (Éditions J.F.) cachet on FDC | ||
| Mali | 65 fdc2 | Stamp and (Éditions So.Ge.Im.) cachet on FDC | ||
| Mali | 65 fdc3 | Stamp and (PJ) cachet on FDC | ||
| Mali | 65 proof1 | Proof (black) | ||
| Mali | 65 proof2 | Proof (red) | ||
| Mauritania | 176 (Mi231) i176 | Imperforate | 1964 | |
| Mauritania | 176 ds | Deluxe sheet (176) | ||
| Mauritania | 176 fdc1 | Stamp and (text) cancel and (PJ) cachet on FDC | ||
| Mauritania | 176 fdc2 | Stamp and (text) cancel and (Éditions J.F.) cachet on FDC | ||
| Mauritania | 176 fdc3 | Stamp and (text) cancel and (multi-color printed) cachet on FDC | ||
| Mongolia | 371 (Mi377) | 1965 | ||
| Mongolia | 372 (Mi378) | |||
| Mongolia | 373 (Mi379) | |||
| Mongolia | 374 (Mi380) | |||
| Mongolia | 375 (Mi381) | |||
| Mongolia | C6 (Mi382) | |||
| Mongolia | C7 (Mi383) | |||
| Mongolia | C8 (Mi384) | |||
| Mongolia | 371+373-374+C6 fdc1 | Four stamps on FDC | ||
| Mongolia | 371+373-374+C6 fdc2 | Four stamps on FDC (no cancel) | ||
| Mongolia | 372+375+C7-C8 fdc | Four stamps on FDC | ||
| New Zealand | None | (Red and blue printed) cachet on cover | 1964 | "International Years of the Quiet Sun 1964 - 65" |
| Niger | 138 (Mi71) i138 | Imperforate | 1964 | |
| Niger | 138 ds | Deluxe sheet (138) | ||
| Niger | 138 fdc | Stamp and (pictorial) cancel and (blue and orange printed) cachet (design like stamp) on FDC | ||
| Niger | 138 proof1 | Proof (brown) | ||
| Niger | 138 proof2 | Proof (purple) | ||
| Nigeria | 173 (Mi164) | 1965 | ||
| Nigeria | 173a | MS12 (12x 173) | ||
| Nigeria | 174 (Mi165) | |||
| Nigeria | 174a | MS12 (12x 174) | ||
| Nigeria | 173-174 fdc | Two stamps and (yellow and black printed) cachet on FDC | ||
| Panama | C334a (BL36) iC334a (BL37) | In (lower) margin of MS2 (C333-C334) In (lower) margin of imperforate MS2 (iC333-iC334), changed colors | 1965 | |
| Paraguay | 922 (Mi1522) i922 (Mi1530) | Imperforate with changed colors | 1966 | |
| Paraguay | 919-923 fdc | One of five stamps and cachet on FDC | ||
| Paraguay | 926 (Mi1526) i926 (Mi1534) | Imperforate with changed colors | ||
| Paraguay | 926a (BL79) i926a (BL80) | SS1 (926) Imperforate SS1, changed colors | ||
| Paraguay | 926a fdc i926a fdc | SS1 and cachet on FDC Imperforate SS1 and cachet on FDC | ||
| Poland | 1343 (Mi1606) | 1965 | ||
| Poland | 1343a (Mi1607) | 1343 changed colors | ||
| Poland | 1344 (Mi1608) | |||
| Poland | 1344a (Mi1609) | 1344 changed colors | ||
| Poland | 1345 (Mi1610) | |||
| Poland | 1345a (Mi1611) | 1345 changed colors | ||
| Poland | 1343-1345 fdc | Three stamps and (pictorial) cancel and cachet on FDC | ||
| Poland | 1343a-1345a fdc | Three stamps and (pictorial) cancel and cachet on FDC | ||
| Portugal | 934 (Mi966) | 1964 | ||
| Portugal | 935 (Mi967) | |||
| Portugal | 934-935 fdc | Two stamps and (pictorial) cancel and (orange and blue printed) cachet on FDC | ||
| Ross Dependency (NZ) | None | (Red and blue printed) cachet on cover | 1964 | "International Years of the Quiet Sun 1964 - 65" |
| Russia (USSR) | 2839 envelope (Mi2862 envelope) | Printed stamp (like 2839) and (grey and black printed) cachet (design like stamp) on stamped envelope | 1963 | IQSY logo |
| Russia (USSR) | 2839 (Mi2862) | 1964 | ||
| Russia (USSR) | 2839 fdc | Stamp and (TKK/AA1 no.12 black printed) cachet on FDC | ||
| Russia (USSR) | 2840 (Mi2863) | |||
| Russia (USSR) | 2841 (Mi2864) | |||
| Russia (USSR) | 2839-2841 fdc | Three stamps and (red pictorial) cancel on FDC (red and black printed cachet) | ||
| Russia (USSR) | 2839 envelope1 (Mi2862 envelope1) | Printed stamp (like 2839) and (black pictorial) cancel and (grey and black printed) cachet (design like stamp) on stamped envelope (issued 1963) | 1964 | IQSY logo |
| Russia (USSR) | 2839 envelope2 (Mi2862 envelope2) | Printed stamp (like 2839) and (black pictorial) cancel and (grey and black printed) cachet (design like stamp, as well as additional 2839 and 2840 stamps) on stamped envelope (issued 1963) | ||
| Russia (USSR) | 2839 envelope3 (Mi2862 envelope3) | Printed stamp (like 2839) and (red pictorial) cancel and (grey and black printed) cachet (design like stamp) on stamped envelope (issued 1963) | ||
| Russia (USSR) | 2839-2841 cover (Mi2862-2864 cover) | Three stamps and (TKK/AA1 no.12 black printed and red rubber-stamp) cachets on cover | 1964 | "IQSY" |
| Russia (USSR) | None | (TKK/AA1 no.19 blue printed) cachet on cover | 1964 | IQSY-type Sun symbol |
| Russia (USSR) | None | (TKK/AA1 no.12 black printed and red rubber-stamp) cachets on (un-stamped and un-canceled) cover | 1964 | "IQSY" (in Estonian and Russian text) |
| Russia (USSR) | None | (TKK/AA1 no.12 black printed and green rubber-stamp) cachets on (un-stamped and un-canceled) cover | ||
| Russia (USSR) | None | (TKK/AA1 no.12 black printed and purple rubber-stamp) cachets on (un-stamped and un-canceled) cover | ||
| Russia (USSR) | 2839 envelope (Mi2862 envelope) | Printed stamp (like 2839) and (brown and black printed) cachet (design like stamp) on stamped envelope (issued 1963) | 1965 | |
| Satellite Beach FL (USA) | Local | 1964? | See also similar cachet on Explorer-30 launch cover | |
| South Georgia | None | (Red and blue printed) cachet on cover | 1964 | "International Years of the Quiet Sun 1964 - 65" |
| Togo | 500 (Mi446A) i500 (Mi446B) | Imperforate | 1964 | |
| Togo | 501 (Mi447A) i501 (Mi447B) | Imperforate | ||
| Togo | 502 (Mi448A) i502 (Mi448B) | Imperforate | ||
| Togo | 503 (Mi449A) i503 (Mi449B) | Imperforate | ||
| Togo | 504 (Mi450A) i504 (Mi450B) | Imperforate | ||
| Togo | 505 (Mi451A) i505 (Mi451B) | Imperforate | ||
| Togo | 500-501+503 fdc | Three stamps and (text) cancel on FDC | ||
| Togo | 500-505 fdc | Six stamps and (text) cancel on FDC | ||
| Togo | 501-502+505 fdc | Three stamps and (text) cancel and cachet on FDC | ||
| Togo | 502+504-505 fdc | Three stamps and (text) cancel on FDC | ||
| Togo | 505a (BL17) | Imperforate MS4 (502-505) | ||
| Togo | 505a fdc | Imperforate MS4 and (text) cancel on FDC | ||
| United States | 1107 fdc (Mi727 fdc) | Address on FDC | 1958 | "US Committee for IQSY" |
| United States | None | (Interpex 1964) cachet on cover | 1964 | IQSY logo |
| United States | 1107+1237 cover (Mi? cover) | (RRI) cachet on cover | 1964 | ISQY logo; "IQSY" |
| United States | None | (Purple rubber-stamp) cachet on cover | 1964 | "January 1, 1964 - Commemorating Start of IQSY"; also IQSY logo |
| United States | None | (Brown printed) cachet on cover, also insert | 1964 | IQSY logo |
| United States | None ss | (Interpex orange) cinderella SS1 | 1965 | IQSY logo |
| United States | None ss | (Interpex yellow) cinderella SS1 | 1965 | IQSY logo |
| United States | 1107 cover (Mi727 cover) | Cinderella on rocket mail cover | 1965 | IQSY logo |
| United States | None | Cinderella on rocket mail cover | 1965 | IQSY logo |
| United States | None ss None iss | Rocket mail cinderella SS1 Rocket mail imperforate cinderella SS1 | 1965 | IQSY logo |
| United States | None ss | Rocket mail cinderella SS1 (different color) | 1965 | IQSY logo |
| United States | None | (USCS no.6927) cachet on cover | 1965 | "USNS Croatan in 1964, fitted out for rocket launch and telemetry as NASA Mobile Range during the International Year of the Quiet Sun" |
| United States | None | (Mission 57) cachet on IGY cover back, also front | 2007 | "international cooperation...continued during the Solar Quiet Years project in 1964-65" |
| Upper Volta | 133 (Mi152) | 1964 | ||
| Upper Volta | 133 fdc | Stamp and (pictorial) cancel and (Éditions So.Ge.Im.) cachet on FDC | ||
| Vietnam (North) | 289 (Mi296) i289 | Imperforate | 1964 | |
| Vietnam (North) | 290 (Mi297) i290 | Imperforate | ||
| Vietnam (North) | 289-290 fdc | Two stamps on FDC | ||
1AA no.: Tartuski Klub Kollektsionerov (TKK) [Tartu Collector Club] "Astronautika Annaalid" number. See Jim Reichman's Philatelic Study Report on Tartu Space Club Covers, 1962-1978, 2011. (e-mail: jgreichman (at) datawest.net)
2The stamp shows the construction of a scientific base on Îles de la Possession in the Crozet Islands. This was done in 1964 under the direction of meteorologist Alfred Faure. One of the seven buildings constructed was a terrestrial magnetism observatory. It was funded by the IQSY governing committee, and magnetic observations were made from this site in 1965 as part of the IQSY research program. The base was named for Alfred Faure in 1969 after his death in 1968.
Below is a list of International Quiet Sun Year (IQSY) on satellite and rocket launch covers (including anniversary-of-launch covers).
| Country | Cancel Date | Cancel Location | Type of Item | Notes on Content |
|---|---|---|---|---|
| International Quiet Sun Year (IQSY) (1964 — 1965) | ||||
| United States | 1963-11-27 | Cape Canaveral FL | (Orbit Covers, no logo) cachet on Explorer-18 launch cover | IQSY logo |
| Russia (USSR) | 1964-01-30 (from cachet) | Tartu Club | (TKK/AA1 no.14 brown printed) cachets on (un-stamped and un-canceled) Elektron-1/2 launch cover | IQSY logo |
| United States | 1964-03-27 | Wallops Island VA | (Orbit Covers, no logo) cachet on Ariel-2 launch cover | IQSY logo |
| Sweden | 1964-08-07 | Kabdalis | (Black printed and blue rubber-stamp) cachet on (sub-orbital) rocket launch cover | IQSY logo |
| United States | 1964-09-05 | Patrick AFB, FL | (SpaceCraft/Swanson) cachet on OGO-1 launch cover, also insert | IQSY-type Sun symbol |
| United States | 1964-09-05 | Cape Canaveral FL | (SpaceCraft/Swanson) cachet on OGO-1 launch cover, also insert | |
| United States | 1965-05-29 | Cape Canaveral FL | (Orbit Covers, no logo) cachet on Explorer-28 launch cover | IQSY logo |
| United States | 1965-06-14 | Wallops Island VA | (Swanson blue and magenta rubber-stamp) cachet on (sub-orbital) rocket launch cover | Ionospheric mission for "IQSY" |
| United States | 1965-06-14 | Wallops Island VA | (Swanson green and magenta rubber-stamp) cachet on (sub-orbital) rocket launch cover | |
| United States | 1965-08-24 | Wallops Island VA | (Black and magenta printed and magenta rubber-stamp) cachet on (sub-orbital) rocket launch cover | IQSY logo |
| United States | 1965-08-25 | Cape Canaveral FL | (Sarzin) cachet on OSO-C [failed] launch cover | IQSY-type Sun symbol |
| United States | 1965-11-19 | Wallops Island VA | (SpaceCraft/Swanson) cachet on Explorer-30 (SolRad-8) launch cover, also insert or insert variation (text length variation) and back | IQSY logo |
| United States | 1965-11-19 | Wallops Island VA | (Sarzin) cachet on Explorer-30 (SolRad-8) launch cover | "IQSY" |
| United States | 1965-11-19 | Wallops Island VA | (Rank velvet) cachet on Explorer-30 (SolRad-8) launch cover | "IQSY"; (see also similar Satellite Beach local) |
| United States | 1965-11-19 | Wallops Island VA | (Rank velvet, trial with overlay) cachet on Explorer-30 (SolRad-8) launch cover | "IQSY" not visible due to overlay; (see also similar Satellite Beach local) |
| United States | 1965-11-19 | Wallops Island VA | (Swanson blue and magenta rubber-stamp) cachet on Explorer-30 (SolRad-8) launch cover | "IQSY" |
| United States | 1965-11-19 | Wallops Island VA | (Swanson blue and magenta rubber-stamp) cachet (different) on Explorer-30 (SolRad-8) launch cover | |
| United States | 1965-11-19 | Wallops Island VA | (HJM black and Swanson blue and magenta rubber-stamp) cachet on Explorer-30 (SolRad-8) launch cover | "IQSY" |
| United States | 1965-11-19 | Wallops Island VA | (Red printed) cachet on Explorer-30 (SolRad-8) launch cover | "IQSY" logo |
| United States | 1965-12-15 | Wallops Island VA | (Sarzin and magenta rubber-stamp) cachet on (sub-orbital) rocket launch cover | "IQSY" |
| United States | 1971-09-29 | Titusville FL | (Goldcraft) cachet on OSO-7 and TETR-4 launch cover | "IYQS" (variation of IQSY acronym) |
| United States | 1973-10-26 | Cape Canaveral FL | (Orbit Covers) cachet on Explorer-50 launch cover | IQSY logo |
1AA no.: Tartuski Klub Kollektsionerov (TKK) [Tartu Collector Club] "Astronautika Annaalid" number. See Jim Reichman's Philatelic Study Report on Tartu Space Club Covers, 1962-1978, 2011. (e-mail: jgreichman (at) datawest.net).
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