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: $150

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1974, Horses Rounding Turn, 10c yellow and multi, a single with blue ”Horse Racing” omitted, in addition red color (US Postage 10 cents) shifted to the top, full OG, NH, VF, C.v. $500++, Scott #1528a