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: $75

Buyer's premium:

1968, Waterfowl Conservation, 6c multicolored, right sheet margin vertical pair imperforate between stamps, ”Mail Early…” imprint, full OG, NH, VF, C.v. $250, Scott #1362a