SOUTH AFRICA 1971 (MNH) 20C SECRETARY BIRD CYL BLOCKS, PHOSPHOR PAPER
20c Secretary Bird cylinder 406–407–408A and 406–407–408B blocks x 4, redrawn design, perf 14 x 14, phosphorised paper, RSA tête-bêche watermark. Fresh and fine. Mint never hinged. SG249avar; SC340var; SACC321
