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

The Perth Mint's Australian Kangaroo bullion series has rotated its reverse design annually since 1990, a deliberate departure from the fixed-design approach used by competitors like the South African Krugerrand and the American Eagle. That policy was a direct marketing decision to drive repeat annual purchases from collectors alongside bullion buyers — and it worked, cementing the series as one of the top five best-selling gold bullion programs globally by the 2000s.

The "Kangaroo at Sunset" reverse ran across a notably long window for this series, spanning over a decade of issues under the same KM reference.