Commemorative cover with a cachet honoring the arrival of Soviet spacemen at Johnson Space Center, signed in black felt tip by Alexei Leonov, Valeri Kubasov, Vladimir Shatalov, Anatoly Filipchenko, Aleksandr Ivanchenkov, Nikolai Rukavishnikov, Vladimir Dzhanibekov, Yuri Romanenko, and Boris Andreyev. In very fine condition.
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