Bidspirit auction | Air Post Stamps and Covers

Air Post Stamps and Covers - Moscow Zeppelin Flight Issue - 1930, 40k ultra and 80k carmine, imperforated complete set of two in horizontal pairs, perfect condition with large margins all around, full OG, NH, VF and rare in pairs, Soviet Philatelic guarantees, N. Mandrovski certificate for each pair, Est. $7,500-$9,000, Scott #C12b-13b