Philadelphia Despatch Post, 1843 (3¢) black on grayish. Large margins, light blue manuscript cancel and tied by red "3" handstamp on locally addressed folded letter sheet with the stamp tied by the ink from the address at bottom left, red "D.O. Blood & Co., City Despatch, Paid" circular handstamp at left; sheet missing sideflaps, the tying portion of the "3" handstamp has been enhanced and the manuscript docketing on reverse has been altered from "1845" to "1843", Very Fine appearance, still an extremely rare usage of the City Despatch Post striding messenger stamp on cover and the only known usage showing D.O. Blood & Co. using the predecessor Robertson & Co. adhesive and numeral handstamp, ex Kleman, Emerson, Brown; with 2010 P.F. certificate. Scott No. 15L3  $12,500 on cover. $0 (Image)