U.S.P.O., Philadelphia Pa., 1c Black on Yellow Glazed (7LB9). Large margins to in, uncancelled as usual, used on buff ca. 1849 cover to West River Md., blue "Philada. Pa. 5 cts. May 9" integral-rate circular datestamp, some wear incl. waterstaining, slightly reduced on three sides and with hinges reinforcing splits in top flap

FINE. A RARE STAMP WITH ONLY EIGHT REPORTED EXAMPLES ON COVER.

Ex Caspary.

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