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: $160

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Description

1931-32, Airship over the Arctic Region, 50k dark gray blue, error of color; and Airship over the Dnieper Dam, 15k gray, engraved printing, perforation 14, both stamps with re-distributed original gum, appearing NH, VF, first one with A. Farberov certificate, mentioned as never hinged, C.v. $518, Est. $300-$400, Scott #C23a, C25b