GREAT BRITAIN 1962 (MNH) NATIONAL PRODUCTIVITY YEAR PHOSPHOR TRAFFIC LIGHT/CYLINDER BLOCKS
National Productivity Year phosphor traffic light/cylinder blocks x 6 (3 items): 2½d (1D.–1B.), 3d (2D.–2B.), 1s3d (3C–3B–3E). Fresh and fine. Mint never hinged. SG631p-633p; SC387p-389p
