George VI. 1936-1952. Proof brass dodecagonal threepence (12 sides). 6.78 gm. 21 mm. Second issue (1949-1952). 1950. His bare head left; GEORGIVS VI D: G: BR: OMN: REX FIDEI DEF. / Silphium plant; THREE PENCE around, date 1950 below. FDC.