The Australian $1 note is a piece of currency issued by the Reserve Bank of Australia. It features an image of Queen Elizabeth II on the front, and on the back, it displays a depiction of Parliament House in Canberra. This note was in circulation until it was replaced by the $1 coin in 1984. Today, it is no longer used as legal tender, but it is still a popular collector's item among numismatists and history enthusiasts.