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

Imperial Russia

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Start price: $1,200

Buyer's premium:

1919, 7r dark green and pink, left sheet margin horizontal imperforated pair with horizontal varnish lines, enlarged margins at top and bottom, clear at right, full OG, NH, VF, expertized by A. Rosselevitch and Romeko, C.v. $4,200++, Est. $2,000-$2,500, Sc. #138c