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

Buyer's premium:

1962, Space Project Mercury, 4c dark blue and yellow, vertical imperforate pair, perfect condition, full OG, NH, VF and very scarce, Est. $500-$600, Scott #1183 imp