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

Worldwide Air Post Stamps and Postal History - Soviet Union - Pioneer Flights

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Start price: $250

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1924 (May 23), Moscow – Koenigsberg – Berlin Flight registered cover forwarded to Paris by connected flight, franked by Lenin Mourning issue perforated complete set in horizontal pairs, tied by Moscow ”23.5.24” ds, two-line boxed Koenigsberg ”Mit Luftpost…”, Paris ”27.5.24” arrival marking, slight traces of previous mounts, still F/VF and probably unique franking, Est. $500-$600, Scott #269-72