100 Dollars - Charles III Phoenix

Niue has operated as a platform for third-party bullion and collector issues since the 1990s, with its coin program administered largely through external minting partners rather than any domestic monetary authority. The arrangement suits the issuer's population of roughly 1,500 people and its legal tender face values, which bear no relationship to market realities.

At 15.5 g of .9999 gold, this sits at the half-troy-ounce weight class — a commercial decision driven by bullion market demand rather than any numismatic tradition.