100 Dollars - Charles III Yellowstone

Yellowstone became the world's first national park by act of the U.S. Congress in 1872, wrested from territorial Wyoming before Wyoming was even a state. Cook Islands has built one of the more aggressive large-format silver programs in modern numismatics, and this kilo piece fits squarely in that commercial tradition — Commonwealth obverse, American subject matter, Pacific issuer, European buyer.

Charles III acceded in September 2022, meaning coins bearing his effigy only began appearing from Cook Islands in 2023 onward as new dies were commissioned across the Commonwealth network.