Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Soviet Union - 1935, Moscow - San Francisco Flight, red surcharge 1r on S. Levanevsky 10k dark brown, small ''f'' variety, surcharge position 9 of 25-stamp setting, full OG, NH, VF, C.v. $2,250, Scott #C68b