cover 1857 Embossed 6d. green and 1/- buff (2) tied by oval-framed "POST OFFICE/P.M.BURG" on 1858 (2 Apr.) quintuple rate envelope (218x100mm.) envelope to England, showing manuscript "2/6", "Crown/REGISTERED" h.s. in red (tying one 1/-) and oval London Registered d.s. (just tying the 6d.) with, on reverse, London (26.5) and arrival (26.5) c.d.s.; all of the embossed cut into in varying degrees and the envelope with heavy vertical filing fold and other lesser faults. Despite the imperfections a most remarkable franking