25 Dollars - Elizabeth II 4th Portrait - Kangaroo - Gold Bullion Coin

Perth Mint's four-nines gold bullion program occupies an interesting commercial position: the .9999 fineness standard was adopted partly to undercut the Royal Canadian Mint's Maple Leaf, which had held the .9999 benchmark largely to itself through the 1980s and into the 1990s. The quarter-ounce denomination targets investors priced out of the full-ounce market without sacrificing the premium fineness that distinguishes Australian bullion from older .9167 sovereign-era coinage.

Ian Rank-Broadley's fourth portrait of Elizabeth II, used on this series from its inception, was retired across Australian coinage in 2019 in favor of Jody Clark's rendering — making the 2019 strike the final year for this obverse pairing specifically.