Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 1

United States - Air Post stamps

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Start price: $600

Buyer's premium:

1980, Blanche Stuart Scott, 28c multicolored, left sheet margin plate No.39541 horizontal imperforated pair, full OG, NH, VF and rare, C.v. $2,000, Est. $800-$1,200 , Sc. #C99a