Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Russia And Soviet Union - First and Pioneer Flights - 1946 (December 11), Pioneer Flight registered cover from Moscow to USA, franked by 10th Anniversary of the Stratosphere Disaster, complete set of three and three other commemorative stamps, tied by Moscow ''9.12.46'' ds, Moscow departure, NYC transit and Portland, OR arrival markings are on reverse, mostly VF, Est. $150- $200, Scott #C77-79