Liwei Yang+ Alexei Leonov inperson autographs Ed Mitchell Sergey Ryazanskiy — Roscosmos cosmonaut

Sergey Ryazanskiy — Roscosmos cosmonaut and flight engineer

This example is particularly desirable as it shows extensive handwritten annotations throughout

Mercury Atlas - Friendship 7 was the first manned Mercury mission that reached orbit piloted by John Glenn

Alexander Kaleri’s certification

This was also the first exchange of a Mir resident crew using the Space Shuttle

Liwei Yang+ Alexei Leonov inperson autographs Ed Mitchell Sergey Ryazanskiy — Roscosmos cosmonautExtremely rare inperson signature of Liwei Yang and Alexey Leonov, obtained by cosmonaut Treshev's son Alexey during the ASE congress in Beijing 2014. Comes with COA and further documentation !