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

Soviet Union 1923-91

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Start price: $150

Buyer's premium:

1937, definitive stamp, peasant 20k green on bluish green network, imperforate single printed on paper without watermark; in addition Maxim Gorky, imperforate 15k brown issued in 1932, balanced margins all around, full OG, NH, VF, C.v. $1,175, Est. $300-$400, Scott #617Ab