Lot 71235 – 1916, 1/2d mauve on pale green paper with horizontal

1916, 1/2d mauve on pale green paper with horizontal grey lines, typewritten (carbon), unused with large margins, from plate 2a position 11, showing error « G.R.I. double » (the first impression under the G, ISLA of Long Island), minor traces of toning on reverse; only nine exist (from pos. 10-12 of this plate – three sheets), of which three survive in the unique block of eight (Mountrobeck lot 33) and so will never be available as singles; there is a ‘Stanley Gibbons’ violet h/s on reverse, very fine and rare example (SG £2’750).