South Africa 1940 ½d Frame Mostly Omitted in Block

1940 ½d Springbuck grey & blue green (SG 75cd, Issue 10 / CC 55f). Remarkable UM top marginal block of four, the upper pair showing FRAME MOSTLY OMITTED (UHB 44A V39). Previously hinged in margin with small adherence mentioned for accuracy, the stamps superb fresh UM. Wonderful, spectacular showpiece.