Proof -- plate 1, TK-TL imperforate on Dr. Perkin's blued paper, from the lower right corner of the sheet (corner of selvedge cut away) showing plate number and inscription "ful not to remove the Cement.", mint with much original gum, a little oxidised and some gum wrinkling as usual, otherwise fine. S.G. Spec. G6g, #2400, R.P.S. Certificate (1981). Photo