Sought-after Soviet commemorative cover, 6.5 x 4.5, signed in ink and felt tip by a total of 16 cosmonaut pioneers, including: Georgy Beregovoy, Andrian Nikolayev, Pavel Popovich, Valery Bykovsky, Viktor Gorbatko, Vitaly Sevastyanov, Vyacheslav Zudov, Pyotr Klimuk, Vladimir Lyakhov, Valery Rozhdestvensky, Yuri Artyukhin, Aleksei Gubarev, Alexei Leonov, Lev Dyomin, Anatoly Filipchenko, and Vladimir Kovalyonok. In fine condition.
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