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Interkosmos
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Interkosmos
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| IK-1 | IK-7 |
This page contains philatelic information on the Interkosmos-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 information provided must be prefaced by a disclaimer, in that factual information about Interkosmos-series satellites was, and still is, very hard to obtain. Some of the Interkosmos-series identifications may be speculative, or even incorrect and are therefore prefaced by "most-likely" or "possible" when they are questionable. The authors would appreciate any assistance in correcting or updating the information presented about Interkosmos-series satellites.
See also the closely-related and equally-challenging Kosmos-series satellites page.
In the table below, the items with Interkosmos descriptions that have yet to be verified are highlighted in yellow.
| 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) |
|---|---|---|---|
| Interkosmos (Russia/USSR) | Interkosmos (Russia/USSR) | Interkosmos (Russia/USSR) | Interkosmos (Russia/USSR) |
| Interkosmos (on other than Interkosmos launch covers) |
Below is a list of Interkosmos-series satellite postal items (stamps, souvenir sheets, aerogrammes, postal cards, etc.).
| Country | Catalog Number | Type of Item | Year of Issue | Notes on Content |
|---|---|---|---|---|
| Interkosmos (Russia/USSR) | ||||
| Adzharia Republic | Local strip1 | Strip of 5 of Germany (East) 1899 overprinted on 2x Russia 45202 (Mi4497), also partial overprint template | 1994 | IK-1 series1 |
| Adzharia Republic | Local strip2 | Strip of 5 of Germany (East) 1899 overprinted on 2x Russia 45212 (Mi4498), also partial overprint template | ||
| Adzharia Republic | Local strip3 | Strip of 5 of Germany (East) 1899 overprinted on 2x Russia 57252 (Mi5896), also partial overprint template | ||
| Adzharia Republic | Local strip4 | Strip of 5 of Germany (East) 1899 overprinted on 2x Russia 57262 (Mi5897), also partial overprint template | ||
| Adzharia Republic | Local strip5 | Strip of 5 of Germany (East) 1899 overprinted on 2x Russia 57272 (Mi5898), also partial overprint template | ||
| Adzharia Republic | Local strip6 | Strip of 5 of Germany (East) 1899 overprinted on 2x Russia 57322 (Mi5903), also partial overprint template | ||
| Adzharia Republic | Local strip7 | Strip of 5 of Germany (East) 1899 overprinted on 2x Russia 57332 (Mi5904), also partial overprint template | ||
| Adzharia Republic | Local strip8 | Strip of 5 of Germany (East) 1899 overprinted on 2x Russia 5984 (Mi6177), also partial overprint template | ||
| Adzharia Republic | Local strip9 | Strip of 5 of Germany (East) 1899 overprinted on 2x Russia 5987 (Mi6180), also partial overprint template | ||
| Adzharia Republic | Local strip10 | Strip of 5 of Germany (East) 1899 overprinted on 2x Russia 6068A (Mi268), also partial overprint template | ||
| Adzharia Republic | Local1 | Czechoslovakia 1717 overprinted on 4x Russia 45202 (Mi4497), from strip of 5, also partial overprint template | 1994/5? | IK-3/5 type (single loop antenna) |
| Adzharia Republic | Local2 | Czechoslovakia 1717 overprinted on 4x Russia 57332 (Mi5904), from strip of 5, also partial overprint template | ||
| Adzharia Republic | Local3 | Czechoslovakia 1717 overprinted on 4x Russia 5984 (Mi6177), from strip of 5, also partial overprint template | ||
| Adzharia Republic | Local4 | Czechoslovakia 1717 overprinted on 4x Russia 6067A (Mi252), from strip of 5, also partial overprint template | ||
| Altai Republic | Local1 | Overprint on 4x Russia 57232 (Mi5894), from strip of 5, also overprint template | 2000 | IK-1 series1 |
| Altai Republic | Local2 | Overprint on 4x Russia 6064 (Mi261), from strip of 5, also overprint template | ||
| Altai Republic | Local3 | Overprint on 4x Russia 6066A (Mi262), from strip of 5, also overprint template | ||
| Altai Republic | Local4 | Overprint on 4x Russia 6067 (Mi251), from strip of 5, also overprint template | ||
| Altai Republic | Local5 | Overprint on 4x Russia 6069 (Mi253), from strip of 5, also overprint template | ||
| Altai Republic | Local fdc1 | Strip of 5 overprints on local post FDC | ||
| Altai Republic | Local fdc2 | Two strips of 5 overprints on local post FDC | ||
| Altai Republic | Local fdc3 | Two strips of 5 overprints on local post FDC | ||
| Bashkortostan | Local | Cuba 2183 overprinted on 2x Russia 6063 (Mi226), from a strip of 5 such overprints, also overprint template | 1996 | IK-1 series1 |
| Bulgaria | 3347 (BL179) | In (lower and lower-right) margin of SS1 | 1967 | IK-10 (cross antenna) (in lower margin), IK-1 series1 (in lower-right margin) |
| Buriatia Republic | Local fdc | Cachet (based on Russia 4430) on local post FDC | 1995 | IK-1 series1 |
| Chechenia | Local1 (200val) | Czechoslovakia 1721 overprinted on 4x Russia 45172 (Mi4494), from strip of 5, also partial overprint template | 1994 | IK launch (possibly IK-4, by issue date of the stamp) |
| Chechenia | Local2 (500val) | |||
| Chechenia | Local3 (1100val) | |||
| Chechenia | Local1 (200val) | Czechoslovakia 1721 overprinted on 4x Russia 45202 (Mi4497), from strip of 5, also partial overprint template | ||
| Chechenia | Local2 (500val) | |||
| Chechenia | Local3 (1100val) | |||
| Chechenia | Local1 (200val) | Czechoslovakia 1721 overprinted on 4x Russia 57332 (Mi5904), from strip of 5, also partial overprint template | ||
| Chechenia | Local2 (500val) | |||
| Chechenia | Local3 (1100val) | |||
| Chuvashia | Local fdc | Cachet (based on Russia 4430) on local post FDC | 1996 | IK-1 series1 |
| Congo (People's Republic) | C247 (Mi661) iC247 | Also detail Imperforate | 1978 | IK-1 series1 (at upper-left) |
| Congo (People's Republic) | C247 ds | Deluxe sheet (C247) | ||
| Congo (People's Republic) | C247 fdc | Stamp and (red-brown and black printed) cachet on FDC | ||
| Cuba | 2183 (Mi2286) | 1978 | IK-1 series1 | |
| Cuba | 2183-2184+C279 fdc | One of three stamps on FDC | ||
| Cuba | 2695 (Mi2846) | 1984 | IK-3/5 type (single loop antenna), not "Intercosmos-1" (as in text); note that the satellite is attached to some kind of a support base | |
| Cuba | 2929 (Mi3084) | 1987 | IK-13 | |
| Cuba | 2930 (Mi3085) | IK-10 (cross antenna) | ||
| Cuba | 2929+2931+2934 fdc | One of three stamps on FDC | (As above for stamps) | |
| Cuba | 2930+2932-2933 fdc | One of three stamps on FDC | ||
| Czechoslovakia | 1717 (Mi1971) | 1970 | IK-3/5 type (single loop antenna), also tiny end-on image (at lower-right) of one of the IK-1 series1, with all 8 solar panels extended | |
| Czechoslovakia | 1720 (Mi1974) | IK-1 series1, also tiny end-on image (at lower-right) | ||
| Czechoslovakia | 1721 (Mi1975) | IK launch (possibly IK-4, by issue date of the stamp), also tiny end-on image (at lower-right) of one the IK-1 series1 (which includes IK-4) with all 8 solar panels extended | ||
| Czechoslovakia | 1716+1721 fdc | Two stamps and (pictorial) cancel and (Checkoslovakia Post) cachet on FDC | (As above for stamps), tiny end-on image of one of the IK-1 series1, with all 8 solar panels extended | |
| Czechoslovakia | 1717+1720 fdc | Two stamps and (pictorial) cancel and (Checkoslovakia Post) cachet on FDC | (As above for stamps), tiny end-on image of one of the IK-1 series1 with all 8 solar panels extended, also detailed drawing of IK-7 (lower solar panels folded) (in cachet) | |
| Czechoslovakia | 1718-1719 fdc | Two stamps and (pictorial) cancel and (Checkoslovakia Post) cachet on FDC | (As above for stamps), tiny end-on image of one of the IK-1 series1, with all 8 solar panels extended | |
| Czechoslovakia | 2024 (Mi2278) | 1975 | IK-10 (cross antenna) | |
| Czechoslovakia | 2027 (Mi2281) | IK-3/5 type (single loop antenna), not "Interkosmos-9" and "Kopernik-500" (as in text) | ||
| Czechoslovakia | 2024-2027 fdc | Two of four stamps on FDC | (As above for stamps) | |
| Czechoslovakia | 2507+label (Mi2762+label) | Stamp and label | 1984 | (possible) recoverable portion of IK-6 (on stamp) |
| Czechoslovakia | 2507 fdc | Stamp on FDC | ||
| Czechoslovakia | 2653 (BL69) | In (middle-left) margin of MS2 (2x 2653a) | 1987 | IK-10 (cross antenna) |
| Djibouti | Unknown h (Mi none) Unknown ih | One of MS9 (a-i) [known illegal issue] One of imperforate MS9 (a-i) | 2010 | "Intercosmos" (most likely) IK-9 |
| Djibouti | Unknown h proof Unknown ih proof | One of MS9 proof (a-i) One of imperforate MS9 proof (a-i) | ||
| Djibouti | Unknown ms proof fdc Unknown ims proof fdc | MS9 proof on FDC Imperforate MS9 proof on FDC | ||
| Djibouti | Unknown ss (BL none) | In (lower-left) margin of SS1 [known illegal issue] | 2016 | IK-1 series1 |
| Djibouti | Unknown ss (BL none) | In (right) margin of SS1 (different) [known illegal issue] | ||
| Germany (Berlin) | 9N359 cover (Mi494 cover) | (Green printed) cachet on cover | 1979 | IK-3/5 (but without a trailing loop antenna) (in left side of cachet) |
| Germany (East) | None | (Pictorial) cancel on cover | 1970 | "Interkosmos-1" (image, and in text) |
| Germany (East) | None | (Pictorial) cancel and (?) cachet on cover | 1970 | "Interkosmos-1" (image, and in text) (in cancel), "Interkosmos-1" launch rocket (in cachet text) |
| Germany (East) | None m | (Gesellschaft für Deutsch-Sowjetische Freundschaft) cinderella, one of cinderella MS20 (a-t + 5 labels) | 1972 | (possible) preparation of an Interkosmos satellite. |
| Germany (East) | None | (Brown and green rubber-stamp) cachet on cover | 1974 | 5th anniv. Interkosmos Program; IK-3/5 type |
| Germany (East) | 1664 (Mi2064) | 1975 | "Interkosmos-10" (image, and in text) (cross antenna, protective fairing in background) | |
| Germany (East) | 1663-1664 fdc | One of two stamps on FDC | ||
| Germany (East) | None e | (Gesellschaft für Deutsch-Sowjetische Freundschaft) cinderella, one of cinderella MS20 (a-t + 5 labels), also annotated | 1975 | IK-1 series1 |
| Germany (East) | None t | (Gesellschaft für Deutsch-Sowjetische Freundschaft) cinderella, one of cinderella MS20 (a-t + 5 labels) | IK-1 series1 (but "Soyuz" in text on satellite) | |
| Germany (East) | None g | (Gesellschaft für Deutsch-Sowjetische Freundschaft) cinderella, one of cinderella MS20 (a-t + 5 labels) | 1981 | "Interkosmos"- 3/5/9/10/12/13/14 type |
| Germany (East) | None b | (Gesellschaft für Deutsch-Sowjetische Freundschaft) cinderella, one of cinderella MS20 (a-t + 5 labels) | 1984 | "Interkosmos" (as in text, but Molniya-1 depicted) |
| Germany (East) | 1899 (Mi2311) | 1978 | IK-1 series1 | |
| Germany (East) | 1898-1899 fdc | One of two stamps and (pictorial) cancel on FDC | ||
| Germany (East) | 1898-1900 fdc | One of three stamps and (pictorial) cancel on FDC | ||
| Germany (East) | None | (Blue and orange and black printed) cachet on (un-canceled) cover | 1989? | "Prognoz-10", aka IK-23 (image, and in text) |
| Hungary | 2019 (Mi2580A) i2019 (Mi2580B) | Imperforate | 1970 | "Interkosmos-1" (in text on satellite) (all solar panels folded) |
| Hungary | 2019 fdc i2019 fdc | Stamp on FDC Imperforate stamp on FDC | ||
| Laos | 700 (Mi905) i700 | Imperforate | 1986 | IK-1 series1 (except un-characteristic cylinder extending from right side of satellite) |
| Mongolia | C35 (Mi773) | 1973 | (possible) (artistic) IK-1 series1 | |
| Mongolia | C84 (Mi1082) | 1977 | (possible) IK-3 (based on information in C85) | |
| Mongolia | C85 (Mi1083) | "Interkosmos-3" launch rocket | ||
| Mongolia | C87 (Mi1085) | IK-10 (cross antenna) | ||
| Mongolia | C90 (Mi1088) | Also detail | IK-? (at right) | |
| Poland | 2151 (Mi2437) | 1976 | IK-10 (cross antenna) | |
| Poland | 2151 fdc | Stamp on FDC | ||
| Poland | 2248a (Mi2539) | On (upper-right) selvedge of MS6 (6x 2248 + 2 labels), also annotated | 1977 | IK-14 (double perpendicular-loop antenna) |
| Poland | 2283 (Mi2576) | 1978 | (possible) IK-9 or IK-14 | |
| Poland | 2283 fdc | Stamp on FDC | ||
| Poland | 2366 (Mi2660) | Also detail | 1979 | IK-14 (double perpendicular-loop antenna), not "Kopernik-500", aka IK-9 (as in text) |
| Poland | 2366 fdc | Stamp on FDC | ||
| Poland | 2369a (BL80) | On one of MS5 (2365-2369 + label) | ||
| Russia (USSR) | 4070 (Mi4108) | Also left and right details | 1973 | IK-3/5 type (single loop antenna) (at left in stamp and in cachet), unknown (at right); IK launch (in cancel) |
| Russia (USSR) | 4070 fdc | Stamp and (pictorial) cancel (design similar to Czechoslovakia 1721) and (red-brown and blue-grey printed) cachet on FDC | ||
| Russia (USSR) | 4070 fdc2 | Stamp and (pictorial) cancel (design similar to Czechoslovakia 1721) and (red-brown and blue-grey printed) cachet (and signature) on FDC | ||
| Russia (USSR) | None | (Left side of) cachet on (airmail) stamped envelope | 1974 | IK-1 series1 (on left) |
| Russia (USSR) | None | (Left side of) cachet on (airmail) stamped envelope (with cancel) | ||
| Russia (USSR) | 4430 (Mi4463) | 1976 | IK-1 series1 | |
| Russia (USSR) | 4430 fdc1 | Stamp and (multi-color printed) cachet on FDC | ||
| Russia (USSR) | 4430 fdc2 | Stamp and (Colorano Silk Cachet) cachet on FDC | ||
| Russia (USSR) | 4489 (Mi4530) | 1976 | "Interkosmos-14" (image, and in text) (double perpendicular-loop antenna) | |
| Russia (USSR) | 4489 fdc | Stamp on FDC | ||
| Russia (USSR) | 4493 (Mi4534) | Also detail | IK-14 (double perpendicular-loop antenna) | |
| Russia (USSR) | 4493 fdc | Stamp on FDC | ||
| Russia (USSR) | 4592 (Mi4653) | From MS30 (4592a (30x 4592)) | 1977 | IK-10 (cross antenna); "Interkosmos-1" (in text on fdc1 back) |
| Russia (USSR) | 4592 fdc1 | Stamp and (Fleetwood) cachet on FDC, also back | ||
| Russia (USSR) | 4592 fdc2 | Stamp and (multi-color printed) cachet on FDC | ||
| Russia (USSR) | 4592 maxi1 | Maxicard (Moscow cancel) | ||
| Russia (USSR) | 4592 maxi2 | Maxicard (? cancel) | ||
| Russia (USSR) | None | (Green and orange-brown and black printed) cachet on stamped envelope, also detail and back | 1977 | IK-1 series1 (lower solar panels folded) |
| Russia (USSR) | 5058 fdc (Mi5189 fdc) | (Blue and black printed) cachet on FDC, also detail | 1982 | IK-1 series1 |
| Russia (USSR) | None | Postal card back, also front | 1982 | IK-10 (center-left) |
| Sacha Republic | Local1 (800val) | Czechoslovakia 1717 overprinted on 4x Russia 5984 (Mi6177), from strip of 5 | 1994/5? | IK-3/5 type (single loop antenna) |
| Sacha Republic | Local2 (800val) | Czechoslovakia 1717 overprinted on 4x Russia 5987 (Mi6180), from strip of 5 | ||
| Sacha Republic | Local3 (800val) | Czechoslovakia 1717 overprinted on 4x Russia 6060 (Mi231), from strip of 5 | ||
| Sacha Republic | Local4 (800val) | Czechoslovakia 1717 overprinted on 4x Russia 6066A (Mi262), from strip of 5 | ||
| Sacha Republic | Local5 (800val) | Czechoslovakia 1717 overprinted on 4x Russia 6067 (Mi251), from strip of 5 | ||
| Sacha Republic | Local1 (1100val) | Czechoslovakia 1721 overprinted on 4x Russia 5984 (Mi6177), from strip of 5 | IK launch (possibly IK-4, by issue date of the stamp from which the overprint design was taken) | |
| Sacha Republic | Local2 (1100val) | Czechoslovakia 1721 overprinted on 4x Russia 5987 (Mi6180), from strip of 5 | ||
| Sacha Republic | Local3 (1100val) | Czechoslovakia 1721 overprinted on 4x Russia 6060 (Mi231), from strip of 5 | ||
| Sacha Republic | Local4 (1100val) | Czechoslovakia 1721 overprinted on 4x Russia 6066A (Mi262), from strip of 5 | ||
| Sacha Republic | Local5 (1100val) | Czechoslovakia 1721 overprinted on 4x Russia 6067 (Mi251), from strip of 5 | ||
| Sacha Republic | Local1 | Czechoslovakia 1720 overprinted on 4x Russia 45202 (Mi4497), from strip of 5, also overprint template | 1996 | IK-1 series1 |
| Sacha Republic | Local2 | Czechoslovakia 1720 overprinted on 4x Russia 45212 (Mi4498), from strip of 5, also overprint template | ||
| Sacha Republic | Local3 | Czechoslovakia 1720 overprinted on 4x Russia 57322 (Mi5903), from strip of 5, also overprint template | ||
| Sacha Republic | Local4 | Czechoslovakia 1720 overprinted on 4x Russia 57332 (Mi5904), from strip of 5, also overprint template | ||
| Sacha Republic | Local fdc1 | Overprints on strip of 5 on local post FDC | ||
| Sacha Republic | Local fdc2 | Overprints on strip of 5 on local post FDC | ||
| Sakhaline | Local (60 value) | (slightly-modified) Czechoslovakia 1721 overprinted on 4x Russia 57232, from strip of 5, also overprint template | 1996 | IK launch (possibly IK-4, by issue date of Czechoslovakia 1721) |
| Sakhaline | Local (60 value) | (slightly-modified) Czechoslovakia 1721 overprinted on 4x Russia 6066A2, from strip of 5, also overprint template | ||
| Sakhaline | Local (60 value) | (slightly-modified) Czechoslovakia 1721 overprinted on 4x Russia 60672, from strip of 5, also overprint template | ||
| Sakhaline | Local (60 value) | (slightly-modified) Czechoslovakia 1721 overprinted on 4x Russia 60682, from strip of 5, also overprint template | ||
| Sakhaline | Local (60 value) | (slightly-modified) Czechoslovakia 1721 overprinted on 4x Russia 6068A2, from strip of 5, also overprint template | ||
| United Nations (Geneva) | 46 fdc (Mi46 fdc) | (Space Voyage) cachet on FDC, also detail | 1975 | IK-10 (cross antenna), not "Intercosmos-9" and "Copernicus 500" (as in text) |
| United States | 1488 fdc (Mi1095 fdc) | (Space Voyage) cachet on FDC | 1973 | "Intercosmos-9 / Copernicus-500 launch" |
1The IK-1 series includes IK-1, 4, 7, 11, 14, and 16, all of which have a ds-u3-ik bus, as noted on the IK-series satellite reference images page.
2See here for a list of engraved/lithographed Russian definitive pairs known to exist with satellite overprints.
Below is a list of Interkosmos-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 |
|---|---|---|---|---|
| Interkosmos (Russia/USSR) | ||||
| 1969-10-14: IK-1 | ||||
| Russia (USSR) | 1969-10-13 | Panevezis | (Panevezis philatelic club) cachet on cover | IK-1 launch |
| Russia (USSR) | 1969-10-14 | Baikonur Karaganda Oblast | (Blue and red rubber-stamp) cachets on (known fake1) cover | IK-1 launch |
| United States | 1969-10-15 | Colorado Springs CO | (R.E. Nichol) cachet on cover, also back | IK-1 launch |
| United States | 1969-10-15 | Colorado Springs CO | (R.E. Nichol) cachet (slightly different) on cover, also back | IK-1 launch |
| IK-1 (anniversaries) | ||||
| Germany (East) | 1979-10-14 | Dresden | (Pictorial) cancel and (Philatelistenverband im Kulturbund der DDR red and black printed) cachet on cover | 10th anniv. IK-1 launch |
| Germany (East) | 1979-10-14 | Dresden | (Pictorial) cancel and (Philatelistenverband im Kulturbund der DDR red and black printed and red rubber-stamp) cachets on cover | 10th anniv. IK-1 launch |
| Germany (East) | 1979-10-14 | Dresden | (Pictorial) cancel and (Philatelistenverband im Kulturbund der DDR blue and black printed) cachet on cover | 10th anniv. IK-1 launch |
| Germany (East) | 1989-10-14 | Berlin-Lichtenberg | (Pictorial) cancel on (airmail) cover | (20th anniv.) IK-1 launch |
| Germany (East) | 1989-10-14 | Berlin-Lichtenberg | (Pictorial) cancel on postal card | (20th anniv.) IK-1 launch |
| Romania | 1989-10-14 | Ploiesti | (Pictorial) cancel and (Casa Armatei Philatelic Club blue) cachet on cover | (20th anniv.) IK-1 launch |
| Romania | 1989-10-14 | Ploiesti | (Pictorial) cancel and (Casa Armatei Philatelic Club blue-black) cachet on cover | (20th anniv.) IK-1 launch |
| Romania | 1989-10-14 | Ploiesti | (Pictorial) cancel on cover | (20th anniv.) IK-1 launch |
| Russia (USSR) | 1989-10-14 | Kapustin Yar | (Pictorial) cancel and (multi-color printed) cachet on postal card | 20th anniv. IK-1 launch (Salyut image, in cancel) |
| 1969-12-25: IK-2 | ||||
| Russia (USSR) | 1969-12-25 | Baikonur Karaganda Oblast | (Red and black printed and red rubber-stamp) cachet on (known fake1) cover | IK-2 launch |
| Russia (USSR) | 1969-12-25 | Baikonur Karaganda Oblast | (Pink and black printed and red rubber-stamp) cachet on (known fake1) cover | IK-2 launch |
| 1972-04-07: IK-6 / Energiya | ||||
| Germany (West) | 1972-04-07 | Bochum | (InterCover) cachet on cover | IK-6 launch |
| Russia (USSR) | 1972-04-07 | Moscow | (Swanson) cachet on cover | IK-6 launch (fantasy depiction) |
| 1972-12-01: IK-8 | ||||
| Russia (USSR) | 1972-11-30 | Moscow | (Swanson) cachet on cover | IK-8 launch (fantasy depiction) |
| 1973-04-19: IK-9 / Kopernik-500 | ||||
| Lithuania | 1973-04-19 | Panevezis | (Panevezis philatelic club) cachet on cover | IK-9 launch |
| Russia (USSR) | 1973-04-19 | Moscow | (Anklam) cachet on cover | IK-9 launch (IK-1 series3 depicted) |
| United States | 1973-04-19 1972-08-21 | Army Postal Service Army Postal Service | (Pictorial) cancel and red text on cover, also (possible) IK-9 body | IK-9 launch OAO-3 launch |
| 1973-10-30: IK-10 | ||||
| Russia (USSR) | 1973-10-30 | Moscow | (Anklam) cachet on cover | IK-10 launch |
| 1977-09-24: IK-17 | ||||
| Russia (USSR) | 1977-09-24 | Moscow | (Icarus Society multi-color printed and black and red rubber-stamp) cachet on stamped envelope | IK-17 launch (IK-1 series3 with lower solar panels folded) |
| 1979-02-27: IK-19 (see also Kosmos-10792) | ||||
| Russia (USSR) | 1979-02-27 | Leningrad | (Black printed and black rubber-stamp) cachet on cover | IK-19 (see also Kosmos-10792) launch |
| IK-20 (anniversaries) | ||||
| Romania | 1989-11-11 | Bucharest | (Pictorial) cancel on cover | 10th anniv. IK-20 launch |
| 1985-04-26: IK-23 / Prognoz-10 | ||||
| Russia (USSR) | 1985-04-26 | Kosmodrome Baikonur | (Multi-color printed and red rubber-stamp) cachets on postal card | IK-23 (Prognoz-10) launch |
| Interkosmos (on other than Interkosmos launch covers) | ||||
| Russia (USSR) | 1978-03-03 | Tartu | (TKK/AA4 no.292) cachet on Soyuz-28 launch cover | IK-3/5 type (single loop antenna) |
| Russia (USSR) | 1978-03-10 | Tartu | (TKK/AA4 no.292) cachet on Soyuz-28 landing cover | IK-3/5 type (single loop antenna) |
1Known fake cover, with a made-up Baikonur postmark, suspected to have been created by Boris Khoroshev from Moscow, and sold by a stamp dealer in Western Europe. There were no Baikonur Cosmodrome official postmarks until 1975 for the Apollo-Soyuz events. Reference the article written by Russian collector Oleg Vaisberg published as an Appendix called "Russian (Soviet) Space Covers" to Bruce Cranford's book Space Covers: Dictionary and Identifier. See also, an analysis of the situation in a book published in 2008 called Commemorative Space Covers from Collector Clubs of the Soviet Union, 1957 to 1980. Another indicator on these fakes is the use of a "first day" cachet that appears on most, but not all, of these fakes.
2IK-19 and Kosmos-1079 were launched on the same date, and at the same launch site, but on different rockets.
3The IK-1 series includes IK-1, 4, 7, 11, 14, and 16, all of which have a ds-u3-ik bus, as noted on the IK-series satellite reference images page.
4AA 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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