South West Africa 1923 KGV ½d WES for WEST VF/M Block

1923 KGV ½d green, Setting I, 14mm between, typographic print, variety "WES" for "WEST" (SG 1a/CC 2b). VF/M/UM block of four, variety bottom right hand stamp (from position r20/8), the lower pair UM. Scarce. (cv£120). See additional image.