Lot 10413 – 1851 (Aug 2) entire to Mexico bearing embossed 1s green in strip of four, two pairs and a single

1851 (Aug 2) entire to Mexico bearing embossed 1s green in strip of four, two pairs and a single to form the 9s rate for up to 2oz by British Packet, tied by London inland numeral  »13 » cancels. Margins are touched in places, one pair with a reduced corner which slightly overlaps the strip. Additionally rated  »6 » (Reales) due from recipient for domestic postage (probably transited at Vera Cruz). A clean and attractive cover, very scarce and an important item of transatlantic maritime and GB postal history.