Bidspirit auction | Worldwide Air Post Stamps and
Worldwide Air Post Stamps and Postal History - Russia and Soviet Union - 1933, Stratostat USSR-1, 5k, 10k and 20k, complete set of three, full OG, NH, VF, C.v. $463, Est. $250-$300, Scott #C37-39
Worldwide Air Post Stamps and Postal History - Russia and Soviet Union - 1933, Stratostat USSR-1, 5k, 10k and 20k, complete set of three, full OG, NH, VF, C.v. $463, Est. $250-$300, Scott #C37-39