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) Two guineas (British coin) What is nowadays known as the Two Guineas coin was first minted in 1664, in England, when it had a nominal value of forty shillings and it was known as a forty-shilling piece, then it was later called a double-guinea or two guinea piece, worth forty-two shillings after the Proclamation of 1717 finally settled the value of a guinea. The term "guinea" indicates the source of the gold used to strike the coin, i.e. from west Africa. For most of its period of production the coin weighed 16.7 - 16.8 grams and was 31-32 millimetres in