500 Dollars - Elizabeth II 6th Portrait - Australian Kangaroo - Gold Proof High Relief

The six-ounce weight places this squarely in Perth's upper tier of annual bullion-adjacent proofs — substantial enough that the high-relief striking requires multiple press passes at significantly reduced die speed to fully raise the field depth without cracking the planchet. Perth has refined this process over decades, but losses at this size remain non-trivial.

Ian Rank-Broadley's sixth portrait of Elizabeth II, adopted by the Perth Mint for this series, was the final effigy used before her death in 2022 ended over seven decades of portraiture evolution across Commonwealth coinage.