Postmarked aboard the Mir space station

astronauts John Young and Bob Crippen launched Space Shuttle Columbia from Kennedy Space Center

The crew spent more than five months in orbit before returning to Earth in November 2014

With its futuristic delta wing

Represents the personal bonds between astronaut families and international crewmates

Soyuz TM-34 ISS Crew 3 - FLOWN cover - Mark Shuttleworth Soviet Postmarked aboard the Mir spaceSoyuz TM 34 Marco Polo Rare ISS Flown Cover with Handwritten note An exceptionally rare cover flown aboard the International Space Station during the Soyuz TM 34 Marco Polo mission, bearing onboard postal cancellations associated with the spacecrafts arrival at the station and the visiting crews return to Earth. The cover is especially desirable because it contains an additional handwritten confirmation of its spaceflight inside, providing a direct