New York N.Y., 5c Black on Gray, "ACM" Initials (9X3). Positions 39-40, horizontal pair, huge margins all around including bottom sheet margin, cancelled solely by red square grids, right stamp repaired pinhole, both stamps with tiny pinholes (not mentioned on certificate)

EXTREMELY FINE APPEARANCE. A RARE BOTTOM SHEET-MARGIN PAIR OF THE 5-CENT NEW YORK POSTMASTER'S PROVISIONAL ON GRAY PAPER.

Illustrated on p. 47 of The New York Postmaster's Provisional by Stanley M. Piller, who notes this style of cancel was first used in November 1846. With 1991 P.F. certificate

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