1 Dollar - Elizabeth II 4th Portrait - Discover Australia - Broome

Broome's pearl diving history underpins this release — by the early twentieth century the town supplied roughly eighty percent of the world's mother-of-pearl shell, relying on fleets of Japanese, Malay, and Aboriginal divers working in conditions of considerable danger and legal ambiguity. The pad-printing technique applied to the coin's surface was adopted by the Perth Mint during this period to achieve photographic colour fidelity impossible through conventional enamelling, though the process raised early questions about long-term adhesion stability under handling.