Bidspirit auction | Worldwide Pioneer Flights - Soviet

Worldwide Pioneer Flights - Soviet Union - 1931-32, Airships, perforated 10k-1r used on six air post covers in various combinations, three addressed to Germany, two - to Czechoslovakia and one is advertising stationery envelope to Ulyanovsk, all appropriate markings, F/VF, Est. $200-$250, Sc. #C20-24