Australian coins refers to the coins which are or were in use as Australian currency. During the early ays of the colonies that formed Australia, foreign currency was used, but in 1910, a decade after federation, Australian coins were introduced. Australia used pounds, shillings and pence until 1966, when it adopted the decimal system with the Australian dollar divided into 100 cents. With the exception of the first Proclaimation Coinage and the Holey Dollars, all Australian coins remain legal tender despite being withdrawn from circulation.