South Africa 1926 1d Spectacular Block Left Stamps Imperf

1926-27 Pretoria Typo's 1d black & carmine, HORIZONTAL PAIR, ONE STAMP IMPERFORATE (SG 31a var/CC 30pf). A F-VF/M/UM block of six, the three left hand stamps fully imperforate (as SG 31a). Bottom pair UM. A spectacular block of this rare error showpiece. See additional image below.