Great Britain 1841 1d red brown Plate 12 imprimaturs, SG8varGREAT BRITAIN 1841 1d Red Brown Plate 12 imprimaturs, SG8var An outstanding unused imperforate imprimatur horizontal pair from the bottom right hand corner of the sheet, lettered 'TKTL'. This exceptional example includes part of the sheet inscription and the plate number 12, which adds significantly to both its rarity and appeal. The pair has been expertly re joined, and the margins are full and well balanced, with clear impressions and strong colour.