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
Ten shilling coin Ten shilling coin The ten shilling (10s) () coin was a one-off commemorative coin issued in Ireland in 1966 to mark the 50th anniversary of the Easter Rising. Ten shillings was a subdivision of the pre-decimal Irish pound, worth of an Irish pound, making this the highest value coin in the pre-decimal system. The coin was 83.5% silver and 16.5% copper. It measured in diameter and weighed 18.144 grams, therefore containing of silver. The coin did not prove popular, and 1,270,000 of the two million produced were withdrawn and melted down. This unpopularity may be due to the ten shilling