Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Russia And Soviet Union - 1931, North Pole Zeppelin Flight and Ice-Breaker ''Malygin'', 30k dark violet, left sheet margin single with perforation L12¼, imperforate between stamp and margin, full OG, NH, VF, Est. $600-$700 , Scott #C30a var