What happens to Australia's money now the Queen has died? And why are leaders' faces on coins anyway?
- Written by Michael P. Theophilos, Associate Professor, Australian Catholic University

Since the introduction of decimal coinage in 1966, about 15 billion Australian coins have been minted with an image of Queen Elizabeth II.
Many of us fondly associate her image with Australian coins, and for most of us it’s all we have ever known (on one side of our money, at least).
Of all the changes that lie ahead now the queen...