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

Soviet Union 1923-40

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Start price: $60

Buyer's premium:

1934, Ivan Fedorov, Pioneer of Printing, 20k carmine and 40k slate gray, complete set of two, full OG, NH, VF, C.v. $152, Scott #529-3