Why Is The Queen On Australian Coins?

By GovMint :

In Australia, the depiction of Queen Elizabeth II on coins signifies the country's position as a constitutional monarchy within the Commonwealth of Nations. The tradition of featuring the reigning monarch on Australian currency pays homage to the historical ties between Australia and the British Crown. Following the death of Queen Elizabeth II in 2022, King Charles III now appears on new Australian coinage, marking a significant transition in the numismatic representation of the monarchy.

Older coins bearing the effigy of Queen Elizabeth II are still legal tender and will continue to circulate for some time. They will eventually be replaced with coins bearing an effigy of King Charles III naturally over time.

Sources Used:

https://www.ramint.gov.au/news-media/news/king-charles-iii-effigy-frequently-asked-questions

https://peo.gov.au/understand-our-parliament/your-questions-on-notice/questions/why-are-we-a-constitutional-monarchy