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: $150

Buyer's premium:

1999, Kestrel 1c multicolored, self-adhesive top left corner sheet margin horizontal pair with plate No.4433A, yellow, dark blue and black offset colors omitted, backing paper intact, VF and scarce unrecorded variety, a common plate No.3333B is included for comparison, Est. $300-$350, Scott #3031 var