Great Britain 1872 4d vermillion Plate 11, SG94.
A very fine and fresh unused, with original gum, block of four lettered 'QK-RL', showing an unusual paper flaw caused by superfluous material on the printing plate. Centred high and to the right, nevertheless a particularly scarce multiple.
Accompanied with a 1989 Royal Philatelic Society (RPS) Certificate of Authenticity.
Stanley Gibbons catalogue value: £2,300+.