Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World. Part 3

Soviet Union

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Start price: $75

Buyer's premium:

1983, Cosmonauts’ Day, souvenir sheet of 50k multicolored, extra Comet between ”CCCP” and ”50”, full OG, NH, VF, Est. $100-$150, Sc. # 5135 var