100 Dollars - Elizabeth II 4th Portrait - Kangaroo Sunset - Gold Bullion Coin

The Perth Mint launched this one-troy-ounce series as part of a broader push to compete directly with the Canadian Maple Leaf and American Gold Eagle in the international bullion market — markets where fractional trust and recognized purity are everything. The .9999 fineness designation, four nines, was the Mint's competitive differentiator; the Royal Canadian Mint had pioneered that standard, and Perth adopted it to capture buyers who viewed .9167 coins as a compromise.

KM#1779 spans the years when the fourth Jody Clark effigy of Elizabeth II was introduced across Commonwealth coinage, replacing the Ian Rank-Broadley portrait that had circulated since 1998.