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International Geophysical
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International Geophysical
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Below is a checklist of International Geophysical Year (IGY) 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.
IGY is less commonly known as the 3rd International Polar Year (IPY).
| 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 Geophysical Year (IGY) | International Geophysical Year (IGY) |
Below is a list of International Geophysical Year (IGY) on postal items (stamps, souvenir sheets, aerogrammes, postal cards, etc.).
| Country | Catalog Number | Type of Item | Year of Issue | Notes on Content |
|---|---|---|---|---|
| International Geophysical Year (IGY) (1957 — 1958) | ||||
| Argentina | 677 (Mi684) | 1958 | ||
| Argentina | 677 fdc1 | Stamp on FDC | ||
| Argentina | 677 fdc2 | Stamp and cancel and cachet on FDC | ||
| Argentina | 677 fdc3 | Stamp and cancel (same) and cachet (different) on FDC | ||
| Argentina | 677 fdc4 | Stamp and cachet on FDC | ||
| Argentina | 677 folder | FDC folder with block of 4 (4x 677) | ||
| Argentina | None | Cachet on cover | 1958 | |
| Argentina | 677 cover (Mi684 cover) | Stamp and cachet on cover | 1959 | |
| Australian Antarctic Territory | L4 cover (Mi? cover) | (Artmaster) cachet on cover | 1959 | |
| Belgium | B605 (Mi1072) | 1957 | quasi-IGY2: Belgian Antarctic Expedition, 1957-1958 | |
| Belgium | B605a (BL25) | MS4 (4x B605b) | ||
| Belgium | B605b (Mi1073) | B605 changed colors | ||
| Belgium | B605b fdc | Stamp on FDC | ||
| British Antarctic Territory | 141 (Mi144) | 1987 | (30th anniv.) IGY; 141 has a design similar to South Georgia 124 | |
| British Antarctic Territory | 142 (Mi145) | |||
| British Antarctic Territory | 143 (Mi146) | |||
| British Antarctic Territory | 144 (Mi147) | |||
| British Antarctic Territory | 141-144 fdc | Four stamps and cachet on FDC | ||
| Bulgaria | C76 (Mi1094A) iC76 (Mi1094B) | Imperforate | 1958 | |
| Bulgaria | C76 fdc | Stamp and cachet on FDC | ||
| Bulgaria | C76 cover | Stamp and cachet on cover | 1959 | |
| Canada | None | Address on franked envelope | 1957 | |
| Canada | 376 (Mi323) | 1958 | ||
| Canada | 376 fdc1 | Stamp and (two-color printed) cachet on FDC | ||
| Canada | 376 fdc2 | Stamp and (Regal) cachet on FDC | ||
| Canada | 376 fdc3 | Stamp and (ArtCraft) cachet on FDC | ||
| Canada | 376 fdc4 | Stamp and (RoseCraft) cachet on FDC | ||
| Canada | 376 fdc5 | Stamp and (two-color printed) cachet on FDC | ||
| Canada | 376 fdc6 | Stamp and (multi-color printed) cachet on FDC, also insert | ||
| Canada | 376 fdc7 | Stamp and (H&E red) cachet on FDC | ||
| Canada | 376 fdc8 | Stamp and (H&E green) cachet on FDC | ||
| Canada | 376 fdc9 | Stamp and (Fleetwood) cachet on FDC | ||
| Canada | 376 fdc10 | Stamp and (purple printed) cachet on FDC | ||
| Canada | 376 fdc11 | Stamp and (red and black printed) cachet on FDC | ||
| Canada | 376 fdc12 | Stamp and (multi-color printed) cachet on FDC | ||
| Canada | 376 fdc13 | Stamp and (Capital-city) cachet on FDC | ||
| Canada | 376 fdc14 | Stamp and (two-color printed) cachet on FDC | ||
| Canada | 376 fdc15 | Stamp and (two-color printed) cachet (same) on FDC (different cancel) | ||
| Canada | 376 essay1 | Essay | ||
| Canada | 376 essay2 | Essay (different) | ||
| Canada | None | Cachet on cover | 1958 | |
| Canada | None | Cachet on cover (different) | 1958 | |
| Canada | None | Cachet on cover (different) | 1958 | |
| Canada | None | Cachet on cover | 1962 | |
| Chad | Unknown ms (Mi?) Unknown ims | In (upper-right) margin of MS4 (a-d) In (upper-right) margin of imperforate MS4 (a-d) | 2011 | IGY logo |
| Chad | Unknown ms fdc | MS4 on FDC | ||
| Chad | Unknown ms (Mi?) Unknown ims | In (upper-left) margin of MS4 (a-d) In (upper-left) margin of imperforate MS4 (a-d) | 2011 | IGY logo; also IPY |
| Chad | Unknown fdc (Mi?) Unknown ifdc | MS4 on FDC Imperforate MS4 on FDC | ||
| Chile | 305 (Mi545) | 1958 | ||
| Chile | C214 (Mi546) | |||
| Chile | 305+C214 fdc | Two stamps and cachet on FDC | ||
| Chile | C214 fdc | Stamp and cachet on FDC | ||
| Colombia | 680 (Mi827) | 1958 | ||
| Colombia | C309 (Mi828) | |||
| Colombia | 680+C309 fdc | Two stamps and cancel and cachet on FDC | ||
| Colombia | C310 (Mi829) | |||
| Cuba | 2132 (Mi2208) | Stamp-on-stamp: East Germany 370 (Mi1603) | 1977 | |
| Cuba | 2133 (Mi2209) | Stamp-on-stamp: Hungary 1216 (Mi1575) | ||
| Cuba | 2134 (Mi2210) | Stamp-on-stamp: North Korea 134 (Mi141) | ||
| Cuba | 2135 (Mi2211) | Stamp-on-stamp: Poland 822 (Mi1062) | ||
| Czechoslovakia | 836 (Mi1055) | 1957 | ||
| Czechoslovakia | 837 (Mi1056) | |||
| Czechoslovakia | 837 maxi | Maxicard | ||
| Czechoslovakia | 838 (Mi1057) | |||
| Czechoslovakia | 836-838 fdc | Three stamps and cancel and cachet on FDC | ||
| Dominican Republic | B21 (Mi672) | 501 surcharged for IGY | 1959 | |
| Dominican Republic | B22 (Mi673) | 502 surcharged for IGY | ||
| Dominican Republic | B21-B22 fdc | Two stamps and cachet on FDC | ||
| Dominican Republic | B23 (Mi674) | 503 surcharged for IGY | ||
| Dominican Republic | B24 (Mi675) | 504 surcharged for IGY | ||
| Dominican Republic | B25 (Mi676) | 505 surcharged for IGY | ||
| Dominican Republic | B25a (BL21?) | MS5 (B21-B25), 505a surcharged for IGY | ||
| Dominican Republic | B23-B25 fdc | Three stamps and cachet on FDC | ||
| Dominican Republic | B21-B25 o/p proofs | Overprint proofs | ||
| Dominican Republic | CB13 (Mi677) | C106 surcharged for IGY | 1959 | |
| Dominican Republic | CB14 (Mi678) | C107 surcharged for IGY | ||
| Dominican Republic | CB15 (Mi679) | C108 surcharged for IGY | ||
| Dominican Republic | CB15a (BL22) | MS3 (CB13-CB15), C108a surcharged for IGY | ||
| Dominican Republic | CB13-CB15 fdc | Three stamps and cachet on FDC | ||
| Ecuador | 650 (Mi992) | 1958 | ||
| Ecuador | 650 fdc | Stamp and cancel and cachet on FDC | ||
| Ecuador | 718 (Mi1134) | 650 overprinted in red | 1964 | |
| Ecuador | C422 (Mi1135) | 650 overprinted in gold | ||
| Ecuador | C422a (Mi?) | 650 overprinted in gold/red | ||
| Ecuador | 1682 (BL176) | Imperforate SS1, stamp-on-stamp: 650 (cutout) | 2003 | |
| Falkland Islands Dependencies | None | Cancel | 1956 | |
| Finland | 373-374 fdc (Mi522-523 fdc) | Cachet on FDC | 1960 | Also IUGG1, Helsinki |
| French Southern and Antarctic Territories | 8 (Mi10) | 1957 | ||
| French Southern and Antarctic Territories | 9 (Mi11) | |||
| French Southern and Antarctic Territories | 10 (Mi12) | |||
| French Southern and Antarctic Territories | 8-10 cover1 | Three stamps and cachet on cover | 1957 | |
| French Southern and Antarctic Territories | 8-10 cover2 | Three stamps and cachet (different) on cover | ||
| French Southern and Antarctic Territories | 8-10 cover | Three stamps and cachet on cover | 1958 | |
| French Southern and Antarctic Territories | C73 (Mi177) | One of strip of 3 (C75a (C73-C75)) (Mi177-179) | 1983 | 25th anniv. IGY |
| French Southern and Antarctic Territory | C75 ds | Delxue sheet (C75) | ||
| French Southern and Antarctic Territories | C75a fdc | Strip of 3 on FDC | ||
| French Southern and Antarctic Territories | 232 (Mi370) | One of strip of 3 (232a (230-232)) | 1997 | (40th anniv.) IGY |
| French Southern and Antarctic Territories | C149 (Mi386) | 1998 | 40th anniv. IGY | |
| French Southern and Antarctic Territories | C80 cover (Mi? cover) | Cachet on cover | 1998 | 40th anniv. IGY |
| French Southern and Antarctic Territories | 386a (Mi621) | From strip of 2 (386 (a-b + label)), or from MS10 (386c (5x 386 (a-b))); IGY stamp-on-stamp: 9 | 2007 | 50th anniv. IPY (IGY) historical research toward new frontiers |
| French Southern and Antarctic Territories | 386b (Mi622) | 50th anniv. IGY (IPY) | ||
| French Southern and Antarctic Territories | Unknown (Mi?) | 2014 | IGY logo | |
| Germany (East) | 370 (Mi603) | 1957 | ||
| Germany (East) | 370 fdc | Four stamps and cachet on FDC | ||
| Germany (East) | 370 maxi | Maxicard | ||
| Germany (East) | 371 (Mi616) | 1958 | ||
| Germany (East) | 372 (Mi617) | |||
| Germany (East) | 371-372 fdc | Two stamps on FDC | ||
| Germany (East) | None | Cachet on cover | 1982 | 25th anniv. IGY; also 100th anniv. 1st IPY |
| Germany (West) | 1404 sc (Mi1187 sc) | Souvenir card back, also front | 1983 | "International Geophysical Year" (in German text) |
| Great Britain | None | (Maia, The Band private advertising) cinderella | 2012 | Design similar to Russia 2235 |
| Greenland | None | Cachet on cover | 1959 | |
| Greenland | None | Cachet on cover (different) | 1959 | quasi-IGY2 |
| Greenland | 526a (Mi?) | One of MS3 (526 (a-c)) | 2008 | 50th anniv. IGY; also IPY |
| Guinea Republic | BL1390 | In (left and lower-right) margin of SS1 | 2007 | 50th anniv. IGY (1957 - 2007); also IHY |
| Guinea Republic | BL1390 fdc | SS1 on FDC | ||
| Guinea Republic | BL1391 | In (lower-right) margin of SS1 (different) | ||
| Guinea Republic | BL1391 fdc | SS1 on FDC | ||
| Guinea Republic | BL1392 | In (lower-right) margin of SS1 (different) | ||
| Guinea Republic | BL1392 fdc | SS1 on FDC | ||
| Guinea Republic | Mi5067-5069_ms3 | In (right) margin of MS3 (Mi5067-5069) | ||
| Guinea Republic | Mi5067-5069_ms3 fdc | MS3 on FDC | ||
| Guinea Republic | Unknown (BL?) | SS1 | 2008 | "Année géophysique internationale" (in text); also IPY |
| Guinea Republic | Unknown ss fdc | SS1 on FDC | ||
| Haiti | 424 (Mi493) | 1958 | ||
| Haiti | 425 (Mi494) | |||
| Haiti | 426 (Mi495) | |||
| Haiti | 427 (Mi496) | |||
| Haiti | C119 (Mi497) | |||
| Haiti | C120 (Mi498) | |||
| Haiti | C121 (Mi499) | |||
| Haiti | 424-427+C119-C121 fdc | Seven stamps on FDC | ||
| Haiti | C121a (BL8) | On one of imperforate MS4 (427 + C119-C121) | ||
| Hungary | 1212 (Mi1571) | 1959 | ||
| Hungary | 1213 (Mi1572) | |||
| Hungary | 1214 (Mi1573) | |||
| Hungary | 1215 (Mi1574) | |||
| Hungary | 1216 (Mi1575) | |||
| Hungary | 1217 (Mi1576) | |||
| Hungary | 1218 (Mi1577) | |||
| Hungary | 1212+1216-1217 fdc | Three stamps and cachet on FDC | ||
| Hungary | 1213-1215+1218 fdc | Four stamps and cachet on FDC | ||
| Hungary | 1262 (Mi1626A) i1262 (Mi1626B) | like 1216, overprinted in red Imperforate | 1959 | |
| Hungary | 1262 fdc1 | Stamp and cachet on FDC | ||
| Hungary | 1262 fdc2 | Stamp and cachet (different) on FDC | ||
| Hungary | 1262 fdc3 | Stamp and cachet (different) on FDC | ||
| Hungary | 1262 fdc4 | Stamp and cachet (different) on FDC | ||
| Hungary | 1262a (Mi?) | 1262 without red overprint | ||
| Hungary | 2492 (Mi3208) | Stamp and label, stamp-on-stamp: East Germany 370 (IGY) | 1977 | |
| Hungary | 2492a (BL?) | MS3 (3x 2492 + 3 labels) | 1977 | |
| Iceland | None | Cachet on cover | 1958 | |
| Indonesia | 460 (Mi224) | 1958 | ||
| Indonesia | 461 (Mi225) | |||
| Indonesia | 462 (Mi226 | |||
| Indonesia | 463 (Mi227) | |||
| Indonesia | 464 (Mi228) | |||
| Indonesia | 460-464 fdc1 | Five stamps and cachet on FDC | ||
| Indonesia | 460-464 fdc2 | Five stamps and cachet (different) on FDC | ||
| Ivory Coast | Unknown ms (Mi?) Unknown ims | In (lower-right) margin of MS4 (a-d) In (lower-right) margin of imperforate MS4 (a-d) | 2011 | IGY logo; also IPY |
| Ivory Coast | Unknown fdc Unknown ifdc | MS4 on FDC Imperforate MS4 on FDC | ||
| Ivory Coast | Unknown ms (Mi?) Unknown ims | In (upper-left) margin of MS4 (a-d) In (upper-left) margin of imperforate MS4 (a-d) | 2011 | IGY logo; also IPY |
| Ivory Coast | Unknown fdc Unknown ifdc | MS4 on FDC Imperforate MS4 on FDC | ||
| Ivory Coast | Unknown ms (Mi?) | In (upper-left) margin of MS4 (a-d) | 2012 | IGY logo; also IHY |
| Japan | 637 (Mi669) | 1957 | ||
| Japan | 637 fdc1 | Stamp and cancel and cachet on FDC | ||
| Japan | 637 fdc2 | Stamp and cancel (same) and cachet (different) on FDC | ||
| Japan | 637 fdc3 | Stamp and cachet (different) on FDC | ||
| Japan | 637 cover1 | Stamp and (Fleetwood) cachet on cover | 1958 | |
| Japan | 637 cover2 | Stamp on cover | 1959 | |
| Korea (North) | 134 (Mi141) | 1958 | ||
| Korea (North) | 135 (Mi142) | |||
| Korea (North) | 136 (Mi143) | |||
| Korea (North) | 137 (Mi144) | |||
| Korea (North) | 134-137 proofs | Signed proofs | ||
| Korea (South) | 235+251+285 cover (Mi? cover) | Cachet on cover | 1958 | |
| Mali | Unknown ms (Mi?) Unknown ims | In (upper-left) margin of MS4 (a-d) In (upper-left) margin of imperforate MS4 (a-d) | 2011 | IGY logo; also IHY |
| Mali | Unknown fdc Unknown ifdc | MS4 on FDC Imperforate MS4 on FDC | ||
| Netherlands | None | Cinderella on rocket mail cover | 1959 | |
| Netherlands Antilles | 241 (Mi65) | 1957 | ||
| Netherlands Antilles | 241 fdc | Stamp and cachet on FDC | ||
| Norway | 355 (Mi411) | 1957 | ||
| Norway | 356 (Mi412) | |||
| Norway | 357 (Mi413) | |||
| Norway | 355-357 fdc1 | Three stamps and cachet on FDC | ||
| Norway | 355-357 fdc2 | Three stamps and cachet (different) on FDC | ||
| Norway | 356 cover | Stamp and cachet on cover | 1957 | |
| Norway | None | Cancel | 1957 | |
| Norway | 356-357 cover | Two stamps and cachet on cover | 1958 | |
| Norway | None | Cachet on cover, also back | 1958 | |
| Norway | 101+356+399+662 sc (Mi?+412+?+? sc) | Souvenir card of 4 (101, 356, 399, and 662) | 1977 | |
| Peru | C168 (Mi599) | 1961 | ||
| Peru | C168 fdc | Stamp and cachet on FDC | ||
| Peru | C168 error | Double-impression error | ||
| Poland | 821 (Mi1061) | 1958 | ||
| Poland | 822 (Mi1062) | |||
| Poland | 821-822 fdc | Two stamps and cachet on FDC | ||
| Romania | C51a fdc (Mi1677+1679 fdc) | Cachet on FDC | 1957 | |
| Romania | C52a fdc (Mi1678+1680 fdc) | Cachet on FDC | ||
| Romania | C51a-C52a fdc | Cachet on FDC | ||
| Romania | None | Cachet on postcard | 2007 | IGY logo |
| Romania | None | Cachet on postcard (different) | 2007 | IGY logo |
| Romania | None | Cachet on postcard (different) | 2007 | IGY logo |
| Romania | None | Cachet on postcard (different) | 2007 | IGY logo |
| Romania | None | Cachet on postcard (different) | 2007 | IGY logo |
| Romania | None | Cachet on postcard (different) | 2007 | IGY logo |
| Romania | None | Cachet on postcard (different) | 2007 | IGY logo |
| Romania | None | Cachet on postcard (different) | 2007 | IGY logo |
| Romania | None | Cachet on postcard (different) | 2007 | IGY logo |
| Romania | None | Cachet on postcard (different) | 2007 | IGY logo |
| Romania | None | Cancel on postcard | 2007 | IGY logo |
| Russia (USSR) | 1957 (Mi1961) | 1957 | ||
| Russia (USSR) | 1958 (Mi1985) | |||
| Russia (USSR) | 1959 (Mi1992) | |||
| Russia (USSR) | None | Postcard back | 1958 | |
| Russia (USSR) | None | Postcard back, also front | 1959 | |
| Russia (USSR) | 2083 (Mi2101) | Stamp and label | 1958 | "IGY" (in text) |
| Russia (USSR) | 2089 (Mi2105) | 1958 | ||
| Russia (USSR) | 2090 (Mi2103) | |||
| Russia (USSR) | 2091 (Mi2104) | |||
| Russia (USSR) | 2089-2091 fdc | Three stamps on FDC | ||
| Russia (USSR) | 2089 cover | Cancel and cachet on cover | 1958 | 5th Assembly CSAGI3 |
| Russia (USSR) | 1884+2089-2091+2087 cover | Three of five stamps on cover | 1959 | |
| Russia (USSR) | 2232 (Mi2259) | 1959 | ||
| Russia (USSR) | 2233 (Mi2277) | |||
| Russia (USSR) | 2234 (Mi2260) | |||
| Russia (USSR) | 2235 (Mi2261) | See also Great Britain cinderella 2012 | ||
| Russia (USSR) | None | Cancel on stamped envelope | 1963 | MGG4 |
| Russia (USSR) | None | Cancel on stamped envelope (different) | 1963 | MGG4 |
| Russia (USSR) | None | Cancel and cachet on stamped envelope | 1963 | IGY and MGG4 |
| Russia (USSR) | None | Cachet on stamped envelope | 1977 | 20th anniv. IGY |
| Russia (USSR) | None | Printed stamp and cancel and cachet on stamped envelope | 1982 | 25th anniv. IGY |
| Russia | 7140 fdc (Mi1548 fdc) | Cachet on FDC | 2009 | Russia 2232, 2233, 2234, 2235 |
| St. Thomas and Prince Island | Unknown ms (BL?) | MS9 | 2006 | IGY logo |
| St. Thomas and Prince Island | Unknown ms fdc1 | MS9 on FDC | ||
| St. Thomas and Prince Island | Unknown ms fdc2 | MS9 on FDC (different) | ||
| St. Thomas and Prince Island | Unknown ms fdc3 | MS9 on FDC (different) | ||
| St. Thomas and Prince Island | Unknown fdc4 | Cachet on FDC | ||
| St. Thomas and Prince Island | Unknown fdc (Mi? fdc) | Cachet on FDC with (blue) cancel | 2006 | IGY logo |
| St. Thomas and Prince Island | Unknown ifdc | Cachet on FDC with (red) cancel | ||
| Somalia | Unknown ss (BL?) Unknown iss | In (upper-right) margin of SS1 In (upper-right) margin of imperforate SS1 | 2004 | IGY logo |
| South Africa | 203 fdc (Mi? fdc) | Cachet on FDC | 1958 | |
| South Africa | None | Postcard | 1958 | |
| South Africa | None | Cachet on card | 1958 | |
| South Africa | None | Cachet on cover | 1958 | |
| South Georgia and the South Sandwich Islands | 124 (Mi165) | 1987 | (30th anniv.) IGY; 124 has a design similar to British Antarctic Territory 141 | |
| South Georgia and the South Sandwich Islands | 125 (Mi166) | |||
| South Georgia and the South Sandwich Islands | 126 (Mi167) | |||
| South Georgia and the South Sandwich Islands | 124-126 fdc | Three stamps and cachet on FDC | ||
| United States | None | Cinderella on rocket mail cover (rocket no.2) | 1957 | |
| United States | None | Cinderella on rocket mail cover (rocket no.3) | 1957 | |
| United States | None | Cinderella on rocket mail cover (rocket no.4) | 1957 | |
| United States | None | Cachet on cover | 1957 | |
| United States | None | Two cinderellas on rocket mail cover | 1958 | |
| United States | None | Rocket mail cinderella MS4 | 1958 | |
| United States | None | Cachet on cover | 1958 | |
| United States | None | Cachet (different color) on cover | 1958 | |
| United States | None | Cachet on cover (different) | 1958 | |
| United States | None | Cachet on back of cover | 1958 | |
| United States | None | Xmas card, also cover and back | 1958 | |
| United States | 1107 (Mi727) | 1958 | ||
| United States | 1107 fdc1 | Stamp and cachet on FDC | ||
| United States | 1107 fdc2 | Stamp and (Fleugel) cachet on FDC | ||
| United States | 1107 fdc3 | Stamp and cachet (different) on FDC | ||
| United States | 1107 fdc4 | Stamp and cachet (different) on FDC | ||
| United States | 1107 fdc5 | Stamp and (Artmaster) cachet on FDC | ||
| United States | 1107 fdc6 | Two stamps and (Artmaster) cachet on FDC | ||
| United States | 1107 fdc7 | Four stamps and (Artmaster) cachet on FDC | ||
| United States | 1107 fdc8 | Stamp and (Artmaster and ?) cachet on FDC | ||
| United States | 1107 fdc9 | Stamp and (ArtCraft) cachet on FDC | ||
| United States | 1107 fdc10 | Stamp and (ArtCraft and ?) cachet on FDC | ||
| United States | 1107 fdc11 | Stamp and (Compex) cachet on FDC | ||
| United States | 1107 fdc12 | Four stamps and cachet (different) on FDC | ||
| United States | 1107 fdc13 | Stamp and cachet (different) on FDC | ||
| United States | 1107 fdc14 | Stamp and cachet (different) on FDC | ||
| United States | 1107 fdc15 | Stamp and cachet (different) on FDC | ||
| United States | 1107 fdc16 | Stamp and (ATA Satellilte Unit) cachet on FDC | ||
| United States | 1107 fdc17 | Stamp and (Hobo Art) cachet on FDC | ||
| United States | 1107 fdc18 | Stamp and (Hobo Art) cachet (different) on FDC | ||
| United States | 1107 fdc19 | Stamp and cachet (different) on FDC | ||
| United States | 1107 fdc20 | Stamp and cachet (different) on FDC | ||
| United States | 1107 fdc21 | Stamp and (House of Farnum) cachet on FDC | ||
| United States | 1107 fdc22 | Stamp and (C. Stephen Anderson blue) cachet on FDC | ||
| United States | 1107 fdc23 | Stamp and (C. Stephen Anderson red) cachet on FDC | ||
| United States | 1107 fdc24 | Stamp and cachet (different) on FDC | ||
| United States | 1107 fdc25 | Stamp and cachet (different) on FDC | ||
| United States | 1107 fdc26 | Stamp and cachet (different) on FDC | ||
| United States | 1107 fdc27 | Stamp and cachet (different) on FDC | ||
| United States | 1107 fdc28 | Stamp on FDC (Goldcraft cachet) | ||
| United States | 1107 card | FDC card | ||
| United States | 1107 folder | FDC folder, also back | ||
| United States | 1107 maxi | Maxicard | ||
| United States | 1107 fdc + 4123a-b fdc | Dual-date FDC | 1958 and 2007 | IGY and IPY logos |
| United States | None ms None ims | (RRI) cinderella MS4 (2x (a-b)) (RRI) imperforate cinderella MS4 (2x (a-b)) | 1958 | "Conclusion of the International Geophysical Year 1957-1958" (in text) |
| United States | 1107 cover1 | Stamp and cachet on cover | 1959 | 1st anniv. IGY |
| United States | 1107 cover2 | Stamp and (two) cachets on cover | 1959 | |
| United States | 1107+1237 cover (Mi? cover) | Cachet on cover | 1964 | IGY logo; "IGY" (in text) |
| United States | None | (Purple rubber-stamp) cachet on cover | 1964 | "5th Anniversary Conclusion of IGY"; also IGY logo |
| United States | None | Cachet on cover | 1977 | 20th anniv. IGY |
| United States | None | Cachet on cover | 1978 | 20th anniv. IGY |
| United States | None | (ASDA) cachet on cover | 1983 | Reproductions of Canada 376 and Indonesia 460 |
| United States | SC109 | (Italia '85 and USPS) souvenir card of 2 (1107, Italy 830) | 1985 | |
| United States | 3187d fdc (Mi3126 fdc) | (PCS golden-replica) back of FDC, also front | 1999 | "International Geophysical Year" (in text) |
| United States | 3187 book page 17 (Mi3126 book page 17) | Page 17 from (USPS) "1950s" book | The "International Geophysical Year (IGY)", a "worldwide study of geological and atmospheric phenomena" | |
| United States | None | Cachet on cover | 2007 | (50th anniv.) IGY |
| United States | None | Personalized stamp and cachet on cover | 2007 | 50th anniv. IGY/IPY |
| United States | None | (Mission 57) cachet on cover back, also back | 2007 | 50th anniv. IGY, IGY logo |
| Yugoslavia | 525 (Mi868) | 1958 | ||
| Yugoslavia | C58 (Mi869) | |||
| Yugoslavia | 525 fdc | Stamp and cachet on FDC | ||
| Yugoslavia | 525+C58 fdc | Two stamps and cachet (same) on FDC | ||
1IUGG = International Union of Geodesy and Geophysics
2Quasi-IGY items imply, but do not specifically mention, IGY.
3CSAGI = Comité spécial de l'Année géophysique internationale (committee that coordinated IGY activities)
4MGG = IGY (Mezhdunarodnovo Geofisicheskovo Goda, International Geophysical Year)
Below is a list of International Geophysical Year (IGY) on satellite launch covers.
| Country | Cancel Date | Cancel Location | Type of Item | Notes on Content |
|---|---|---|---|---|
| International Geophysical Year (IGY) (1957 — 1958) | ||||
| United States | 1958-03-26 | Patrick AFB, FL | (Epps/Fleetwood) cachet on Explorer-3 launch cover | IGY logo |
| Russia (USSR) | 1958-04-14? | Moscow | Cancel on Sputnik-2 event cover | MGG1 |
| United States | 1958-07-26 | Patrick AFB, FL | (Artmaster) cachet on Explorer-4 launch cover | "IGY" (in text) |
| United States | 1958-05-28 | Washington DC | (Handwritten) cachet on Vanguard-SLV1 launch cover | "US National Committee for IGY" |
| United States | 1958-03-17 | Patrick AFB, FL | (Goldcraft) cachet on Vanguard-1 launch cover | "International Geophysical Year" |
| United States | 1959-09-18 | Port Canaveral FL | (Sarzin) cachet on Vanguard-3 launch cover | "International Geo. Year" |
| United States | 2002-07-10 | Cape Canaveral FL | (Multi-color) cachet on 40th anniv. Telstar-1 launch cover | Reproduction of Hungary 1218 (in cachet) |
| United States | 2008-01-31 | Washington DC | (Mission 57) cachet on 50th anniv. Explorer-1 launch cover back, also front | "IGY" (in text) |
| United States | 2013-01-31 | Bourne Station MA | (Coverscape) cachet on 55th anniv. Explorer-1 launch cover | "IGY" (in text) |
1MGG = IGY (Mezhdunarodnovo Geofisicheskovo Goda, International Geophysical Year)
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