Commemorative cover with a cachet honoring the first decade of the Soviet space program, signed in various inks by ten cosmonauts: Gherman Titov, Andriyan Nikolayev, Pavel Popovich, Valery Bykovsky, Valentina Tereshkova, Alexei Leonov, Georgy Beregovoy, Pavel Belyayev, Boris Yegorov, and Konstantin Feoktistov. In fine condition.
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