Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 1

United States - Classic Stamps, Proofs and Multiples

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Start price: $150

Buyer's premium:

1943, Flag of Czechoslovakia, 5c blue violet, blue, red and black, double impression of ”Czechoslovakia”, full OG, NH, VF, C.v. $600, Scott #910a