100 Dollars - Elizabeth II 6th Portrait - Bird of Paradise

Australia's four-nines gold bullion coinage carries one of the highest fineness specifications in mainstream sovereign-backed production, a standard the Perth Mint adopted aggressively from the 1980s onward to compete directly with the Canadian Maple Leaf in the international bullion market. The Bird of Paradise series rotates annually through Australia's native fauna, a deliberate strategy to drive collector demand alongside pure bullion interest.

The sixth portrait of Elizabeth II, by Jody Clark, was introduced across Commonwealth mints beginning in 2015 — the fifth sculpted effigy of the queen to appear on Australian coinage during her reign.