Bidspirit auction | Worldwide Air Post Stamps and
Worldwide Air Post Stamps and Postal History - Soviet Union - 1933, Stratostat ''USSR 1'', 5k-20k, complete set of three, post office fresh quality, full OG, NH, VF, C.v. $463, Scott #C37-39
Worldwide Air Post Stamps and Postal History - Soviet Union - 1933, Stratostat ''USSR 1'', 5k-20k, complete set of three, post office fresh quality, full OG, NH, VF, C.v. $463, Scott #C37-39