Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 3

Soviet Union Stamps of 1924-40

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Start price: $50

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1938, First North Pole Flight, 80k red and carmine, right sheet margin imperforated single, tiny thin spot probably from hinge removal, full OG, trace of hinge, VF, appearance, C.v. $150, Est. $75-$100 , Sc. #628a