One Cent 2006 (mint sets only), Coin from Australia - detailed information

The Australian one-cent coin is the smallest denomination of the Australian dollar. It was introduced with the Currency Act 1965 (Commonwealth) but - unlike some of the other denominations - it did not replace an earlier pre-decimal coin; given that the 5 cents piece replaced the sixpence, one cent was technically equal to 1.2 pence but the Act rounded that to one penny. The one cent coin was much smaller than the penny though, so the penny denomination did not continue to circulate (unlike the sixpence, shilling and florin which were equivalent to respectively 5 cents, 10 cents and 20 cents and were re-denominated as such).

The one cent and the two cent denominations were withdrawn from circulation in February 1992. They have never been demonetised though and remain legal tender.

In 2006, the Royal Australian Mint produced some for mint sets (brilliant uncirculated coins and proofs), celebrating the 40th anniversary of the denomination. Gold proofs have a diameter of 17.53mm, weigh 5.61g and are of 0.999 purity (0.1802 oz. AGW).

Silver proofs of the same year have Her Majesty's "Second Portrait" (by Arnold Machin) and are listed separately in the Non-Circulating Legal Tender section.