Three covers flown on the International Space Station, postmarked on board the ISS on the 50th anniversary of Yuri Gagarin's first manned spaceflight, each signed in ink by members of notable Space Shuttle crews: STS-35 Columbia (Vance Brand, Guy Gardner, Jeff Hoffman, Mike Lounge, Ron Parise, and Sam Durrance), STS-37 Atlantis (Steven Nagel, Ken Cameron, Linda Godwin, Jerry L. Ross, and Jay Apt), and STS-39 Discovery (Mike Coats, L. Blaine Hammond, Gregory J. Harbaugh (ins), Rick Hieb, Don McMonagle, Lacy Veach, and Guion S. Bluford). In fine condition.
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