South West Africa 1923 KGV 5/- Type II Plate No1 Corner Pair UM

1923 KGV 5/- purple & blue, Setting II, 10mm between (SG 13/CC 13). PLATE NO1 CONTROL CORNER PAIR, VF/UM from bottom left corner. Fresh, small diagonal wrinkle from usual sheet-rolling. Rare, only 80 control pairs ever existing (only 20 sheets printed, ie only 20 possible each corner). (cvR67500). See additional image.