25 Dollars - Charles III Czech Republic

Niue has operated as a prolific licensing vehicle for foreign coin programs since the 1990s, its status as a New Zealand realm territory lending legal-tender standing to issues that have no practical circulation on the island's roughly 1,500-person population. This particular gold issue, struck under King Charles III's effigy as Niue's head of state, is a product program almost certainly manufactured at a contracted European mint and sold directly to collectors through the Czech market — the Czech Republic having no constitutional relationship with Niue whatsoever.

The 7.78 g specification corresponds to one-quarter troy ounce.