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

Soviet Union

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Start price: $400

Buyer's premium:

1939, definitive issue, factory worker 30k claret, horizontal imperforate pair, balanced margins, full OG, NH or very light trace of hinge on left stamp, VF, C.v. $1,550, Est. $700-$800, Scott #618b