SOUTH AFRICA 1971 (MNH) 2½C GROOT CONSTANTIA CYL BLOCKS, PHOS FRAME
2½c Groot Constantia cylinder 419–418A and 419–418B blocks x 4, redrawn design, perf 14 x 14, Harrison matt paper (fluorescent front and back), 3 mm phosphor frame, RSA tête-bêche watermark. Fresh and fine. Mint never hinged. SG286a; SC330var; SACC291e
Note: the watermark RSA letters are correctly orientated when viewed from the front of the stamps
