Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Russia and Soviet Union - Pioneer Flights - 1959 (February 2), large size registered air mail cover from Moscow to Vienna, franked by North Pole Station souvenir sheet of four 1r multicolored, tied by Moscow Central Telegraph Office K-9 date stamp, Vienna ''5.2.59'' arrival marking, VF and scarce franking, Est. $100-$120, Scott #1767a