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

Soviet Union Stamps of 1924-40

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Start price: $400

Buyer's premium:

1925, Lenin Mausoleum, essay of unaccepted design for 40k in violet brown, printed on watermarked Borders and Rosettes paper, full OG, NH, VF, Est. $600-$800