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

Worldwide Air Post Stamps and Postal History - United States

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Start price: $100

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1951, DC-4 Skymaster, stationery envelope 10c chocolate on pale blue paper, error of color, 4-line text on reverse, VF and scarce, a common envelope No. UC16 is enclosed, C.v. $450, Scott #UC16b