GREAT BRITAIN 1966 (MLH) 1S6D GREY-BLUE CYLINDER 1. BLOCK, E/I, PHOSPHOR
1s6d Grey-Blue cylinder 1. 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 lightly hinged in the margin only. SG618a; SGS154; SC366p
Note: stamp at column 1, row 20 (lower left) affected by white flaw in hair below diadem
