30 Dollars - Elizabeth II 6th Portrait - Koala - Silver Bullion Coin

Australia's 1-kilogram silver Koala series has been issued by the Perth Mint since 1990, making it one of the longer-running large-format bullion programs in the Southern Hemisphere. The 6th portrait of Elizabeth II — sculpted by Jody Clark and adopted by Australian coinage in 2019 — appears here for only a short window before the Queen's death in September 2022 closed the series permanently on her effigy.

Perth's .9999 fineness on this format is notable: most sovereign mints struck comparable kiло pieces at .999 until the mid-2010s, when competitive pressure from private refiners pushed the standard higher.