GREAT BRITAIN 1963 (MNH) 4½D CHESTNUT CYLINDER 8. BLOCK, E/I, PHOSPHOR
4½d Chestnut cylinder 8. block x 6 on whiter paper with two phosphor bands (applied photogravure) reacting blue, perf type E/I. Fresh and fine. Mint never hinged. SG616b; SGS98; SC360p