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 (United States coin) mm) in thickness. Its weight has varied, depending upon the composition of metals used in its production (see further below). The U.S. Mint's official name for the coin is "cent" and the U.S. Treasury's official name is "one cent piece". The colloquial term "penny" derives from the British coin of the same name, the pre-decimal version of which had a similar place in the British system. In American English, "pennies" is the plural form. (The plural form "pence"—standard in British English—is not used in reference to American coins.) Although the coin's abolition has been proposed because it is now worth