Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 1

Worldwide Air Post Stamps and Postal History - Soviet Union

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Start price: $150

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1937, Aviation Exhibition, 10k-1r, complete set of seven and souvenir sheet of four stamps of 1r, all with full OG, NH, VF, C.v. $624, Scott #C69-75, C75a