Australia, George V, unofficial square flan "pattern Crown or Five Shillings" dated 1921, struck in aluminium, struck to a brilliant proof finish, small bare head left, by Donald R Golder after Mackennal, GEORGIVS V D.G. BRITT:OMN:REX, rev. struck en medaille, large 5, Kangaroo leaping left in front, date either side, AUSTRALIA above, edge plain, diameter 35mm., as struck and unique in aluminium, with modern square obverse die, which served to strike the preceding pieces, incuse impression of small bare head left, by Donald R Golder, cancelled, with two lead impressions, as made and cancelled (4)