2026 Proof SetAustralia's change to decimal currency on 14 February 1966 was not just a change in numbers; it was a cultural shift. Schools, businesses and households had to adjust to a new way of counting, and the government launched one of the most memorable public education campaigns in Australian history. Enter "Dollar Bill", a friendly cartoon character who popped up on television, posters and pamphlets, cheerfully explaining the new system. His catchy jingle,