Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Russia And Soviet Union - 1930, Moscow Zeppelin Flight issue, imperforate set of two, 40k dark blue has bottom right corner margin, 80k carmine - nice balanced margins, full OG, NH (80k) or unused, no gum, VF and rare, I. Kirzhner (40k) and V. Zagorsky certificates, C.v. $4,500. Est. $2,500-$3,000, Scott #C12b-13b