History of Aviation, Rare Stamps and Postal History of the World, Part 2
Lot 855:
1931 (July 25-27), North Pole Flight cover, franked by ”Polar Fahrt 1931” overprint on 4m black brown, on board cancel ”26.7.1931” (late date stamp, probably because the cover was posted at Leningrad), red confirmation cachet and ice-breaker ”Malygin” special arrival marking, mostly VF, C.v. $825, Sieger #119F, €1,100, Est. $250-$300, Sc. #C42
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