SOUTH AFRICA 1967 (MNH) 2½C GROOT CONSTANTIA CYL BLOCKS, RSA WMK
2½c Groot Constantia cylinder 17–23A, 17–23B, 17C–23 and 17D–23 blocks x 4, redrawn design, violet and green shade, perf 14 x 14, chalk-surfaced paper, RSA sideways watermark. Fresh and fine. Mint never hinged. SG242; SC320; SACC239
Note: the top of the RSA triangle watermark faces right when viewed from the back of the stamps
