GREAT BRITAIN 1961 (MNH) 2½D CARMINE-RED CYLINDER 50 BLOCK, I/P, PHOSPHOR
2½d Carmine-Red cylinder 50 block x 6, type II, on cream paper with one phosphor band at left (applied photogravure) reacting blue, perf type I/P. Scarce. Fresh and fine. Mint never hinged. SG614a; SGS63a; SC357p
