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

Buyer's premium:

2007, Flag (41c) multicolored, self-adhesive horizontal pair of coil stamps with die cutting omitted, backing paper intact, VF and scarce, reportedly 50 pairs possible, C.v. $500, Est. $200-$250, Scott #4133a