Philadelphia Pa Aug 21 1861 octagonal datestamp on cover with 1861 1c Blue and 3c Rose (63, 65), each tied by matching grid to cover to Academia, Pennsylvania (Morton correspondence), prepaid 1c to the mail carrier fee plus 3c domestic letter, 3c stamp small faults, fine and rare, the earliest documented use of the 1861 1c issue and one of just five recorded August 21 covers, ex-Fisher, Evans, "Aristocrat", Pacetti