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

Soviet Union

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Start price: $75

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1957 (December 16), Launching of the First ”Sputnik”, black overprint on Tsiolkovsky stamp of 40k, used on registered cover from Karacharovo (Tver Obl.) to Moscow, uprated by two definitives, ”19.12.57” arrival ds on reverse, mostly VF, Est. $100-$150, Sc. # 2021