Lot
23 
Philadelphia, Pa., U.S.P.O. Despatch, 1850-52, 1¢ blue, clear to large margins showing portion of adjacent stamp at right, tied by red star handstamp on 1850 cover to Spring Water, N.Y., additionally tied by blue "Philada., Pa., 10, Aug 25" integral rate cds, with original enclosure confirming year date, Very Fine and choice, the earliest recorded usage of the Philadelphia "blue" carrier issue, ex-Sheriff & Wagshal; with 1982, 1992 & 2010 P.F. certificates. Scott No. 7LB12; $1,250 Estimate $750 - 1,000.