1851 (Oct. 8) Philadelphia Pa. to Cognac, France, light blue cover with blue "Philadelphia Pa. Oct 8" cds and red "PHILa. PAID 5 Cts." octagon handstamp rerated "21" cent, carried by Collins Line Baltic from New York Oct. 11th to Liverpool arriving Oct. 22nd, London red (10.23) transit backstamp, red Calais entry cds with black "8" decimes due rating handstamp, Cognac (10.25) arrival backstamp, Very Fine, a scarce rerated 21¢ Philadelphia octagon. Estimate  $200 - 300. $0 (Image)