Australian twenty-cent coin Australian twenty-cent coin The Australian twenty-cent coin of the Australian decimal currency system was issued with conversion to decimal currency on 14 February 1966, replacing the florin which was worth two shillings – a tenth of a pound. (The Australian pound was converted to two Australian dollars.) To date, three different obverse face designs have been used: from 1966 to 1984, the head of Queen Elizabeth II by Arnold Machin; from 1985 to 1998, the head by Raphael Maklouf; and since 1999, the head by Ian Rank-Broadley. The obverse has the inscription AUSTRALIA and the year-of-issue on the right hand
Two guineas (British coin) design as before, except the order of the shields is England+Scotland, France, Ireland, and Hanover, with the legend -- "Duke of Brunswick and Lueneburg, Arch-Treasurer and Elector of the Holy Roman Empire". The edge of the coin is milled diagonally, and the coins of this reign weighed 16.8 grams. The value of the guinea had fluctuated over the years from twenty to thirty shillings, and back down to twentyone shillings and sixpence by the start of George's reign. A Royal Proclamation of December 1717 fixed the value of the guinea at twenty one shillings. George II's two guinea pieces mark