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: $500

Buyer's premium:

1974, Horses Rounding Turn, 10c yellow and multi, bottom right corner sheet margin plate No.35115-35114 block of four, blue ”Horse Racing” omitted, red color (US Postage 10 cents) shifted to the top, full OG, NH, VF, C.v. $2,000 as four singles, Scott #1528a