History of Aviation, Rare Stamps and Postal History of the World, Part 3

Soviet Union

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Start price: $100

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1937, Alexander Pushkin, 10k yellow brown in block of four, perforation 13¾x12¼, used on reverse of registered cover from Tiflis to Moscow, addressed to Joseph Kaukhchishvili, Chief of the Caucasian Philatelic Bureau, postage due marking on front, arrival ds, F/VF, Est. $150-$200, Sc. #590B