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

Soviet Union Stamps of 1941-91

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Start price: $200

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1955, Konstantin A. Savitsky, 40k x4 multicolored, set of two souvenir sheets with black and red marginal inscription, both with the second line of the top inscription shifted to the left (”K” to the left of ”let”), full OG, NH, VF, Est. $300-$400, Sc. #1747a, b, var