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: $100

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1993, Classic Books, four imperforate proofs of 29c multicolored in top right corner sheet margin se-tenant strip of four, top margin with imprint, 2mm scissors’ separation in the middle, full OG, NH, VF, C.v. $400, Est. $150-$200, Scott #2788a P