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:

1978, Piano, 8.4c dark blue on yellow paper, horizontal imperforate pair of coil stamps, two-line pre-cancel ”WASHINGTON DC”, full original shiny gum, NH, VF, C.v. $500, Scott #1615Cf