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).