SOUTH AFRICA 1963 (MNH) 1C KAFFERBOOM FLOWER CYL BLOCKS, RSA WMK
1c Kafferboom Flower cylinder S33A–S13A and S33B–S13B blocks x 4, type II design, perf 15 x 14, reversed RSA watermark. Fresh and fine. Mint never hinged. SG227w; SC289var; SACC226a
Note: the RSA watermark is reversed when viewed from the front of the stamps