Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World. Part 1

United States - Modern Errors and Varieties

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Start price: $250

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1992, Christmas Toys, proof se-tenant booklet pane of four 29c stamps with wrong layout (stamps from the bottom placed at the top), imperforated horizontally between stamps, selvage at left with plate No. A11111, full OG, NH, VF, C.v. $1,200, Est. $400-$500, Scott #2718a Pd