One of approximately 250 believed to exist on the open market - remaining 50 covers were donated to universities and institutes

together with Sergey Prokopyev and Serena Auñón-Chancellor

Her record-setting mission also generated valuable scientific data concerning the physical and psychological effects of extended life in microgravity

A Certificate of Authenticity from Yuri Gidzenko

Soyuz MS-15 flown ISS cover - crewsigned first apollo flight One of approximately 250 believedSoyuz MS 15 Flown ISS Cover Signed by the Return Crew Attractive cover flown aboard the International Space Station during the Soyuz MS 15 mission, featuring a distinctive commemorative cachet and the hand signed autographs of: Oleg Skripochka Roscosmos cosmonaut and Soyuz commander Jessica Meir NASA astronaut Andrew Drew Morgan NASA astronaut Soyuz MS 15 launched from the Baikonur Cosmodrome on 25 September 2019, carrying Skripochka, Meir and Emirati