Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Russia and Soviet Union - 1932, International Polar Year, 50k carmine and 1r green, complete set of two, both with perforation 12½, full OG, NH, VF, the last one with Stolow guarantee hs, C.v. $315, Est. $150-$200 , Scott #C34-35a