ASTP Anniversary 2025 – FLOWN ISS cover Historic space memorabilia A copy of Duke’s letter

A copy of Duke’s letter of authentication documenting the source of the material is included with every presentation

His mission was known as Blue Dot and included an extensive program of scientific

KNIGA-produced covers are well established within Soviet space-philately collecting and were issued to commemorate the achievements of the Soviet crewed space program

Soyuz MS-21 crew

Nearly fifteen years after his first mission

ASTP Anniversary 2025 – FLOWN ISS cover Historic space memorabilia A copy of Duke’s letterAPOLLOSOYUZ 50TH ANNIVERSARY COVER SIGNED BY THE INTERNATIONAL SPACE STATION CREW July 15, 2025 Fifty Years After the Historic ApolloSoyuz Launch An exceptional commemorative cover marking the 50th anniversary of the ApolloSoyuz Test Project, signed by the seven astronauts and cosmonauts serving aboard the International Space Station on the anniversary date: Sergey Ryzhikov Roscosmos Aleksey Zubritskiy Roscosmos Jonny Kim NASA Anne McClain NASA