Philadelphia Pa May 23 1863 datestamp with 11-blade patent cancel ties 1861 1c Blue and 3c Rose (63, 65) to cover to Fort Saratoga, Washington DC, reverse with octagonal U.S. Penny Mail carrier datestamp, 1c with captured "Engraved by" imprint, 3c possibly washed and reused illegally, prepays the 1c carrier fee to the mails plus the 3c domestic postage, very fine and attractive, ex-Pacetti