Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Soviet Union - 1923, ''Fokker F111'', 5r green with wide ''5'' variety, right sheet margin single on thinner paper, full OG, tiny hinge trace like a small spot of gum loss, apparently NH, VF and extremely rare stamp of only 25 examples possible, Raritan Stamps guarantee, C.v. $40,000, Est. $20,000-$25,000, Sc. #C4a