Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World. Part 3

Soviet Union

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Start price: $100

Buyer's premium:

1924-25, definitive issue, worker 14k slate blue, typo printing, perforation 14½x15, excellent quality single with tiny natural paper inclusion at bottom, full OG, NH, VF, C.v. $325, Est. $150-$200, Sc. # 286