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

Worldwide Air Post Stamps and Postal History - Russia and Soviet Union

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Start price: $100

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1935 (December 19), registered air mail cover from Kharkov to Vienna, franked by three stamps, including Nikolai Kamanin stamp of 40k purple, arrival ds is on reverse, mostly VF,Scott #C66