Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Soviet Union - 1932 (August 26), Attempt of Flight Franz Josef Land to Arkhangelsk, card and cover franked by International Polar Year stamps of 50k and 1r respectively, both addressed to Vienna with Berlin transit postmarks, mostly VF, Est. $150-$200 , Sc. #C34-35