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: $60

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1976, Christmas, 13c multicolored, bottom right corner sheet margin plate No’s 37617-37619 imperforate block of six, full OG, NH, VF, C.v. $225++, Scott #1703a