Great Britain 1878 (26 September) £1 Brown-lilac (Plate 1), Watermark Maltese Cross, Perforation 15½ x 15.
Very fine unused example with large part original gum. A great rarity of GB philately and in very fine condition for this exceptionally rare stamp. SG129
Accompanied by a Brandon certificate of authenticity. The Stanley Gibbons catalogue price is £90,000.