Perth Mint's bimetallic bullion program has paired gold centers with outer rings in various metals since the 1990s, but the platinum-ring configuration remains the most technically demanding — platinum's hardness makes die wear a persistent production issue, and strike pressure must be calibrated differently than for gold-on-gold or gold-on-silver formats. This is also the first year the series carries Charles III's effigy, following the updating of Commonwealth coinage portraits after Elizabeth II's death in September 2022.
Perth Mint's bimetallic bullion program has paired gold centers with outer rings in various metals since the 1990s, but the platinum-ring configuration remains the most technically demanding — platinum's hardness makes die wear a persistent production issue, and strike pressure must be calibrated differently than for gold-on-gold or gold-on-silver formats. This is also the first year the series carries Charles III's effigy, following the updating of Commonwealth coinage portraits after Elizabeth II's death in September 2022.