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
Penny (British pre-decimal coin) many merchants and mining companies issued their own copper tokens e.g. the Parys Mining Company on Anglesey issued huge numbers of tokens (although their acceptability was strictly limited). In 1797, the government authorised Matthew Boulton to strike copper pennies and twopences at his Soho Mint in Birmingham. At the time it was believed that the face value of a coin should correspond to the value of the material it was made from, so they had respectively to contain one or two pence worth of copper (for a penny this worked out to be one ounce of copper). This requirement meant