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: $400

Buyer's premium:

1985, John J, Audubon, 22c dark blue, horizontal strip of 6 and a half stamp at right, imperforate between 5th and 6th stamps, full OG, NH, VF and rare, Scott Errors Cat. mentioned 10 pairs known, C.v. $1,300, Scott #1863f