The Australian one cent piece was in circulation between the introduction of decimal currency in 1966 and the retirement of the one and two cent piece in February 1992.(Royal Australian Mint, 2017) During these years two circulating types were issued, the first (1966 - 1984) featured the Arnold Machin portrait of HM Queen Elizabeth II and the second (1985 - 1991) featured the Raphael Maklouf portrait. A number of additional uncirculated pieces have been issued in these types as part of the Masterpieces in Silver collection. A third type featuring the Ian-Rank Broadley portrait was also issued in 2006, 2010 and 2011 as part of special uncirculated sets.In 2012 a miniaturised (11.15mm) gold variety was also struck with the Ian-Rank Broadley portrait as part of a gold miniature set. Throughout all of these types, the reverse has remained the iconic Stuart Devlin feathertail glider design. Devlin's initials can be found below the tip of the marsupials tail (see example below).