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-2r, imperforate and perforated complete sets of four (comb perf), full OG, NH, mostly VF, C.v. $685, Est. $300-$400 , Scott #C26-29, C30-33