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

Soviet Union 1923-40

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Start price: $75

Buyer's premium:

1923, definitive issue, 1k-1r, litho printing, imperforate complete set of ten, all with sheet margins, full OG, NH, mostly VF, C.v. $240, Scott #25-59