1 Dollar - Elizabeth II 4th Portrait - Treasures of Australia - Pearls

Part of Perth Mint's long-running Treasures of Australia series, which drew on the country's commodity wealth across multiple precious-metal issues throughout the 2000s and into the 2010s. Australia remains one of the world's dominant pearl producers, with the Broome region of Western Australia historically central to the industry — at its peak in the early twentieth century, Broome supplied roughly 80% of the world's mother-of-pearl shell before plastic buttons collapsed that market entirely.

Ian Rank-Broadley's fourth portrait of Elizabeth II, adopted by the Perth Mint from 1999 onward.