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:

1981, 13-Star Flag over Independence Hall, 13c dark blue, red and brown red, right sheet margin imperforate block of four, tagging omitted, ZIP imprint on the edge, full OG, NH, VF, priced with ”-” in the Cat., Est. $300-$350, Scott #1622Ch