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

Soviet Union of 1923-40

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Start price: $100

Buyer's premium:

1927, definitive issue, inverted black surcharge 8k on soldier 7k brown, perforation 12, printed on watermarked paper, full OG, NH, VF, Soviet Philatelic guarantee hs, C.v. $200,Scott #350a