cover 12c Black (17), margins to barely in, used with 3c Dull Red (11), margins to cut in at top and average-centered 1857 Issue 3c Rose type I (25), vertical strip of three, scissors separated with perfs. trimmed at top and right, all tied by large Boston "Paid" in grid cancels on 1857 cover to London, England, redirected to Liverpool, red "19" h.s. credit (to Britain), red London transit ties Scott no. 11, black "Boston Br. Pkt. Aug 12" exchange h.s. on reverse, blue "Forwarded by Geo. Peabody & Co. London" double oval forwarder's h.s. on reverse, Liverpool backstamp, average-centered G.B. 1p Rose Red (20) used as internal forwarding postage (the G.B. stamp affixed partly over the U.S. 12c stamp) and tied by "43" in oval grid cancel, struck twice additionally tying U.S. nos. 11 and 17, carried by the Cunard Line steamer Europa, this cover paid the 24c rate to England by British Mail, very fine, a very desirable combined 1851-1857 Issues franking to England with additional G.B. forwarding postage photo