Australia, George V, unofficial square flan "pattern Crown or Five Shillings" dated 1920, struck aluminium, struck to a brilliant proof finish, crowned and draped bust left, by Donald R Golder after Mackennal, GEORGIVS V D.G. BRITT:OMN:REX, rev. struck en medaille, large 5, kookaburra flying right in front, date either side, AUSTRALIA above, edge plain, diameter 35mm., as struck and unique in aluminium, with modern obverse die, which served to strike the preceding pieces, incuse impression of crowned bust left, cancelled, with two lead impressions, as made and cancelled (4)