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

Worldwide Air Post Stamps and Postal History - RSFSR and Soviet Union - Pioneer Flight

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Start price: $100

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1931 (May 25), postcard and cover franked by imperforate Airships issue of 10k, 15k and 20k (card), 50k and 1r (cover), sent by registered air mail from Moscow to Germany, Berlin Luftpostamt red marking, Berlin transit (5.26) and Lorch arrival (5.27) date stamps, both are VF, Est. $200-$250, Scott #C15-19