SOUTH AFRICA 1966 (MNH) 12½C PROTEA CYLINDER BLOCKS, RSA WATERMARK
12½c Protea cylinder G13–12–10A and G13–12–10B blocks x 4, redrawn design, blue-green background, perf 14 x 14, chalk-surfaced paper. Fresh and fine. Mint never hinged. SG247a; SC322var; SACC241a
