Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 3

Russian Air Post Stamps

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Start price: $150

Buyer's premium:

1931, Ice-Breaker ”Malygin” and Dirigible ”LZ-127”, 30k-2r, imperforated and perforated (L12½) complete sets of four, the last one is centered well above average, full OG, NH, VF, G. Biondi certificates for each set, C.v. $552, Est. $250-$300, Sc. #C26-29, C30a-33a