Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Russia and Soviet Union - 1938-40, North Pole Flight, First and Second Trans- Atlantic Flights, Papanin's Expedition, Flight to Far East, Ice-Breaker Sedov Polar Basin Drift, six complete issues, the total is 22 stamps, full OG, NH, VF, C.v. $440, Est. $200-$250 , Scott #625/775