South Africa SGO33a 1 1/2d BOTH Stamps with DIAERESES variety

Official. 1944-50 Set 20A (= 1944 issue) 1 1/2d yellow-buff and deep slate-green (SUID-AFRIKA hyphenated medium format) SG type O2 opt (14.5mm spacing) WITH DIAERESES block of 4 neatly cancelled by large part M.P.K. cds dated 23 NOV 46. Some unimportant separation at left still a fine and rare block. Ex Matheson. (Union Handbook O99)