Australia adopted decimal currency in 1966 following a major public awareness campaign that included television and radio advertisements featuring the characters of Dollar Bill an
A newsreel item from 1965 about His Royal Highness The Duke of Edinburgh, Prince Philip, opening the new Royal Australian Mint in Canberra accompanied by then Treasurer, Harold Holt.
Australia converted to decimal currency on 14 February 1966. As the jingle says 'Clink go the cents folks, clink, clink, clink. Changeover day is closer than you think.'