I'm sorry, but I don't have a 1965 coin to post with this thread. Please post one or any coin from the Soviet Union. 50 years ago today, March 18, 1965, Alexei Leonov took the First ever spacewalk. He exited the Voskhod 2 capsule via an inflatable airlock. His spacewalk lasted 12 minutes. He had great difficulty in re-entering the airlock, and only managed to get in by venting part of the air in his spacesuit, a very hazardous undertaking. Ten years later in 1975 he was the commander of the Soyuz spacecraft in the Apollo-Soyuz Test Project, the first international spaceflight.
Don't have any "related" coins, but the Cook Islands had a Space Walk collector coin issued in 2009. Somewhat gimmicky but interesting design ... Christian