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: $100

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Description

1932, Moscow Philatelic Exhibition, 15k black brown and 35k ultra used on cover from Moscow to Leningrad, tied by special Exhibition postmark in red, arrival ds on reverse, VF, Est. $150-$200 , Sc. #485-86