Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 1
Thursday, May 4, 2023 at 3:00 PM UTC
Lot 529:
2001, Book Binding, 1c multicolored, gray color missing on ”1” variety, top sheet margin block of four, full OG, NH, VF, copy of Greene certificate for complete sheet, a common block is included for comparison, C.v. $1,200, Unitrade C.v. CAD$1,600 as singles, Scott #1673a
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