Official IASP series no.7

(selected) covers with
Zaso silk / IASP
numbered cachets

Official IASP logo
Zaso silk/IASP no.7IASP logo

This page contains (selected) covers with Zaso silk / IASP numbered cachets produced by John Zaso and the International Association of Space Philatelists (IASP) to mark satellite launches and other space-related events. Those covers include this Official IASP series numbered logo and one or both of the IASP / Zaso logo combination on the front.

Many of the postal items listed below are also found in other pages of the Un-manned Satellite Philately website. However, below are also a few items not found elsewhere in the website because they are not of direct interest to the authors. They are nevertheless included here to make this list of named covers more complete. Such items are highlighted in blue.

Readers who know of additional information or images are invited to contact the authors using the e-mail addresses found at the link at the bottom of this page.

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)
Zaso silk / IASP cachets Zaso silk / IASP cachets


Below is a list of Zaso silk / IASP cachets on postal items (stamps, souvenir sheets, aerogrammes, postal cards, etc.).

CountryCatalog NumberType of ItemYear of IssueNotes on Content
Zaso silk / IASP cachets (on (non-launch cover) postal items)
Zaso silk / IASP numbers that are missing from this list, and the table below, are being sought
United States1759 fdc1 (Mi1356 fdc1)(Zaso silk/IASP no.2) cachet on FDC1978"Viking-Mars"
United States1759 fdc2 (Mi1356 fdc2)(Zaso silk/IASP no.3) cachet on FDC
United States1759 fdc3 (Mi1356 fdc3)(Zaso silk/IASP no.3) cachet (image shifted upward) on FDC
United States1912 fdc (Mi1481 fdc)(Zaso silk/IASP no.29) cachet on FDC1981"space achievements"
United States1913 fdc (Mi1482 fdc)(Zaso silk/IASP no.30) cachet on FDC
United States1914 fdc (Mi1483 fdc)(Zaso silk/IASP no.31) cachet on FDC
United States1915 fdc (Mi1484 fdc)(Zaso silk/IASP no.32) cachet on FDC
United States1916 fdc (Mi1485 fdc)(Zaso silk/IASP no.33) cachet on FDC
United States1917 fdc (Mi1486 fdc)(Zaso silk/IASP no.34) cachet on FDC
United States1918 fdc (Mi1487 fdc)(Zaso silk/IASP no.35) cachet on FDC
United States1919 fdc (Mi1488 fdc)(Zaso silk/IASP no.36) cachet on FDC


Below is a list of Zaso silk / IASP cachets on launch covers (including anniversary-of-launch covers, and launch-related event covers).

CountryCancel DateCancel LocationType of ItemNotes on Content
Zaso silk / IASP numbered cachets (many on un-manned satellite launch or event covers)
Zaso silk / IASP numbers that are missing from this list, and the table above, are being sought
United States1978-07-10Houston TX(Zaso silk/IASP no.1) cachet on cover"astronaut candidates", "Space Shuttle"
United States1978-08-01Houston TX(Zaso silk/IASP no.4) cachet on cover"astronaut selection", "August 1, 1978"
United States1978-08-08Cape Canaveral FL(Zaso silk/IASP no.5) cachet on coverPioneer-13 launch
United States1978-10-01Cape Canaveral FL(Zaso silk/IASP no.6) cachet on cover"Medal of Honor", "October 1, 1978"
United States1978-11-13Kennedy Space Center FL(Zaso silk/IASP no.7) cachet on coverHEAO-2 launch
United States1978-12-21Houston TX(Zaso silk/IASP no.8) cachet on cover"Space Shuttle", "Houston, Texas"
United States1979-02-24Vandenberg AFB, CA(Zaso silk/IASP no.9) cachet on coverSolwind launch
United States1979-03-241Vandenberg AFB, CA(Zaso silk/IASP no.9) cachet on cover
United States1979-03-09Edwards CA(Zaso silk/IASP no.10) cachet on cover"Space Shuttle", "test flight"
United States1979-03-09Edwards CA(Zaso silk/IASP no.11) cachet on cover
United States1979-03-24Cape Canaveral FL(Zaso silk/IASP no.12) cachet on cover"Space Shuttle", "Kennedy Space Center"; general weather (in text)
United States1979-04-10Cape Canaveral FL(Zaso silk/IASP no.13) cachet on cover"Shuttle Enterprise", "KSC arrival"; Shuttle and fantasy satellite
United States1979-05-01Cape Canaveral FL(Zaso silk/IASP no.14) cachet on cover"Shuttle Enterprise", "roll out"
United States1979-06-27Vandenberg AFB, CA(Zaso silk/IASP no.16) cachet on coverNOAA-6 launch
United States1979-07-05Cape Canaveral FL(Zaso silk/IASP no.17) cachet on cover"Space Shuttle", "external tanks"
United States1979-07-09Cape Canaveral FL(Zaso silk/IASP no.18) cachet on coverVoyager-2 event: closest approach to Jupiter
Australia1979-07-12Adelaide SA(Zaso silk/IASP no.19) cachet on coverSkylab re-entry; Skylab-mission Earth image
United States1979-07-11Cape Canaveral FL(Zaso silk/IASP no.20) cachet on cover
United States1979-07-20Cape Canaveral FL(Zaso silk/IASP no.21) cachet on cover"Apollo-XI" (Apollo-11), "10th anniversary"
United States1979-08-09Cape Canaveral FL(Zaso silk/IASP no.22) cachet on coverWestar-3 launch
United States1979-12-17Pearlington MS(Zaso silk/IASP no.23) cachet on cover"Space Shuttle", "test engines fired"
United States1981-04-12Kennedy Space Center FL(Zaso silk/IASP no.24) cachet on cover"Space Shuttle", "Insignia"
United States1981-04-12Kennedy Space Center FL(Zaso silk/IASP no.25) cachet on cover"Space Shuttle", "Columbia"
United States1981-04-13Houston TX(Zaso silk/IASP no.26) cachet on cover"Space Shuttle", "Astronaut John W. Young"
United States1981-08-25Cape Canaveral FL(Zaso silk/IASP no.28) cachet on coverVoyager-2 event: encounter with Saturn
United States1981-11-13Houston TX(Zaso silk/IASP no.39) cachet on cover"Space Shuttle", "Astronaut Richard H. Truly"
United States1982-11-11Kennedy Space Center FL(Zaso silk/IASP no.49) cachet on coverSTS-5 launch; SBS-3 deployed
United States1982-11-11Houston TX(Zaso silk/IASP no.50) cachet on coverSTS-5 launch; SBS-3 deployed
United States1982-11-16Houston TX(Zaso silk/IASP no.51) cachet on coverSTS-5 landing
United States1982-11-16Edwards AFB Station CA(Zaso silk/IASP no.52) cachet on cover
United States1983-04-07Houston TX(Zaso silk/IASP no.55) cachet on coverSTS-6 spacewalk
United States1983-04-07Houston TX(Zaso silk/IASP no.55) cachet (and signatures) on cover
United States1983-04-09Edwards AFB Station CA(Zaso silk/IASP no.56) cachet on coverSTS-6 landing
United States1983-04-09Edwards AFB Station CA(Zaso silk/IASP no.56) cachet (and signatures) on cover
United States1983-06-19Cape Canaveral FL(Zaso silk/IASP no.58) cachet on coverSTS-7 event: Palapa-B1 deployed
United States1983-06-22Houston TX(Zaso silk/IASP no.59) cachet on coverSTS-7 event: SPAS-1 deployed
United States1983-11-28Kennedy Space Center FL(Zaso silk/IASP no.65) cachet on cover, also backSTS-9 pre-launch
United States1983-12-01Houston TX(Zaso silk/IASP no.66) cachet on coverSTS-9 post-launch
United States1984-02-03Kennedy Space Center FL(Zaso silk/IASP no.70) cachet on coverSTS-41B launch; Westar-6 deployed
United States1984-02-03Houston TX(Zaso silk/IASP no.71) cachet on coverSTS-41B event: "Rehearsal for Solar Max [SMM] repair"
United States1984-02-07Kennedy Space Center FL(Zaso silk/IASP no.72) cachet on coverSTS-41B event: "Space Shuttle - MMU Tests"
United States1984-02-11Kennedy Space Center FL(Zaso silk/IASP no.73) cachet on coverSTS-41B landing
United States1984-04-06Kennedy Space Center FL(Zaso silk/IASP no.74) cachet on coverSTS-41C launch
United States1984-04-08Houston TX(Zaso silk/IASP no.75) cachet on coverSTS-41C event: SMM failed capture (even though the cachet refers to the LDEF)
United States1984-04-10Houston TX(Zaso silk/IASP no.76) cachet on coverSTS-41C event: SMM captured
United States1984-04-13Edwards AFB, CA(Zaso silk/IASP no.77) cachet on coverSTS-41C landing
United States1984-08-30Kennedy Space Center FL(Zaso silk/IASP no.78) cachet on coverSTS-41D launch; SBS-4. deployed
United States1984-08-31Houston TX(Zaso silk/IASP no.79) cachet on coverSTS-41D event: Leasat-F1 (Syncom-4-2) deployed
United States1984-09-01Houston TX(Zaso silk/IASP no.80) cachet on coverSTS-41D event: Telstar-3C deployed
United States1984-09-05Edwards AFB, CA(Zaso silk/IASP no.81) cachet on coverSTS-41D landing
United States1984-10-05Kennedy Space Center FL(Zaso silk/IASP no.82) cachet on coverSTS-41G launch; ERBS deployed
United States1984-10-05Houston TX(Zaso silk/IASP no.83) cachet on cover
United States1984-10-11Kennedy Space Center FL(Zaso silk/IASP no.84) cachet on coverSTS-41G event: first American woman walk in space
United States1984-10-13Kennedy Space Center FL(Zaso silk/IASP no.85) cachet on coverSTS-41G landing
United States1984-11-08Kennedy Space Center FL(Zaso silk/IASP no.86) cachet on coverSTS-51A launch
United States1984-11-12Houston TX(Zaso silk/IASP no.87) cachet on coverSTS-51A event: Palapa-B2 recovered
United States1984-11-14Houston TX(Zaso silk/IASP no.88) cachet on coverSTS-51A event: Westar-6 recovered
United States1984-11-16Kennedy Space Center FL(Zaso silk/IASP no.89) cachet on coverSTS-51A landing
United States1985-01-27Kennedy Space Center FL(Zaso silk/IASP no.91) cachet on coverSTS-51C landing
United States1985-03-05Kennedy Space Center FL(Zaso silk/IASP no.92) cachet on coverSTS-51E "rollback"
United States1985-04-16Kennedy Space Center FL(Zaso silk/IASP no.94) cachet on coverSTS-51D event: Leasat-F3 (Syncom-4-3) first switch-on attempt
United States1985-04-16Kennedy Space Center FL(Zaso silk/IASP no.95) cachet on cover
United States1985-04-19Kennedy Space Center FL(Zaso silk/IASP no.96) cachet on coverSTS-51D landing
United States1985-04-29Kennedy Space Center FL(Zaso silk/IASP no.97) cachet on coverSTS-51B event: "Spacelab-3" activated
United States1985-04-29Kennedy Space Center FL(Zaso silk/IASP no.98) cachet on coverSTS-51B event: "Spacelab-3" crew
United States1985-04-29Kennedy Space Center FL(Zaso silk/IASP no.99) cachet on coverSTS-51B event: "Spacelab-3" experiments
United States1985-05-06Edwards AFB, CA(Zaso silk/IASP no.100) cachet on coverSTS-51B landing
United States1985-06-17Kennedy Space Center FL(Zaso silk/IASP no.101) cachet on coverSTS-51G launch; Morelos-1 deployed
United States1985-06-20Kennedy Space Center FL(Zaso silk/IASP no.102) cachet on coverSTS-51G event: SPARTAN-101 deployed
United States1985-06-21Kennedy Space Center FL(Zaso silk/IASP no.103) cachet on coverSTS-51G; "SPARTAN-101 astronomy platform"
United States1985-06-24Edwards AFB, CA(Zaso silk/IASP no.104) cachet on coverSTS-51G landing
United States1985-07-29Kennedy Space Center FL(Zaso silk/IASP no.105) cachet on coverSTS-51F launch
United States1985-08-01Kennedy Space Center FL(Zaso silk/IASP no.107) cachet on coverSTS-51F event: PDP deployed and recovered
United States1985-08-27Kennedy Space Center FL(Zaso silk/IASP no.109) cachet on coverSTS-51I launch; Aussat-A1 deployed; ASC-1 deployed
United States1985-08-27Kennedy Space Center FL(Zaso silk/IASP no.110) cachet on cover
United States1985-08-27Kennedy Space Center FL(Zaso silk/IASP no.111) cachet on cover
United States1985-09-03Edwards CA(Zaso silk/IASP no.112) cachet on coverSTS-51I landing
United States1985-10-03Kennedy Space Center FL(Zaso silk/IASP no.113) cachet on coverSTS-51J launch
United States1985-10-03Kennedy Space Center FL(Zaso silk/IASP no.114) cachet on cover
United States1985-10-03Kennedy Space Center FL(Zaso silk/IASP no.115) cachet on cover
United States1985-10-07Edwards AFB. CA(Zaso silk/IASP no.116) cachet on coverSTS-51J landing
United States1985-10-30Kennedy Space Center FL(Zaso silk/IASP no.117) cachet on coverSTS-61A launch
United States1985-11-03Kennedy Space Center FL(Zaso silk/IASP no.118) cachet on coverSTS-61A unknown event
United States1985-10-31Kennedy Space Center FL(Zaso silk/IASP no.119) cachet on coverSTS-61A event: GLOMR-1 deployed
United States1985-11-06Edwards, CA(Zaso silk/IASP no.120) cachet on coverSTS-61A landing
United States1985-12-25Kennedy Space Center FL(Zaso silk/IASP no.125) cachet on coverSTS-61C pre-launch: launch "canceled"
United States1986-01-12Kennedy Space Center FL(Zaso silk/IASP no.126) cachet on coverSTS-61C launch; Satcom-Ku1 deployed
United States1986-01-13Kennedy Space Center FL(Zaso silk/IASP no.127) cachet on coverSTS-61C crew
United States1986-01-18Edwards AFB, CA(Zaso silk/IASP no.128) cachet on coverSTS-61C landing
United States1986-01-28Kennedy Space Center FL(Zaso silk/IASP no.129) cachet on coverSTS-51L launch disaster [failed]
United States1986-02-01Kennedy Space Center FL(Zaso silk/IASP no.130) cachet on coverSTS-51L memorial services: "Dick Scobee"
United States1986-02-01Kennedy Space Center FL(Zaso silk/IASP no.132) cachet on coverSTS-51L memorial services: "Judith Resnick"
United States1986-01-31Kennedy Space Center FL(Zaso silk/IASP no.134) cachet on coverSTS-51L memorial services: "Ellison Onizuka"
United States1986-01-31Kennedy Space Center FL(Zaso silk/IASP no.135) cachet on coverSTS-51L memorial services: "Ron McNair"
United States1986-05-01Kennedy Space Center FL(Zaso silk/IASP no.137) cachet on coverGOES-G launch [failed]
Summary: ~100 of the 137 Zaso silk / IASP covers that are known to exist

1On this Solwind cover, the cancel month should be "Feb", not "Mar".


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