GREAT BRITAIN 1967 (MNH) 8D MAGENTA CYLINDER 4 BLOCK, E/I, PHOSPHOR
8d Magenta cylinder 4 block x 6 on whiter paper with two 9.5 mm phosphor bands (applied photogravure) reacting violet, perf type E/I. Fresh and fine. Mint never hinged. SG617b; SGS123; SC364p
Note: the stamp at column 2, row 18 (top right) is affected by the diadem flaw