Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Russia and Soviet Union - 1938-39, North Pole Flight, First Trans-Atlantic Flight, Papanin's Expedition and Aviation Day overprints, four complete sets, the total is 17 stamps, full OG, NH, VF, C.v. $335, Est. $250-$300 , Scott #625/46, C76-76D