United States & Worldwide Stamps

1883 90c purple, an incredible block of forty, oval Boston Registered pmks, stamps amazingly well centered, straight edge at right, some toned spots and occasional perf. flaws, affixed on piece, with some perf. strengthening possible, fine and most impressive multiple, one of the only two known blocks of 40, signed Holcombe, with 1979 Mario Zanini cert. (catalogued as eight blocks of four and four pairs) -
Estimate price: $4500-5000