Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World. Part 2

Soviet Union

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Start price: $250

Buyer's premium:

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, a common set of sheets is included for comparison, Est. $400-$500, Scott #1747a, b, var