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

Russia and Soviet Union - Air Post stamps and covers

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Start price: $300

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Description

1931, Airship over the Arctic Region, 50k dark gray blue, error of color, comb perforation 10½x12, watermark Borders and Rosettes, full OG, NH, mostly VF, C.v. $900, Est. $600-$700 , Scott #C23a