5 Dollars - Charles III U.S. Buffalo gold

This is one of the so-called "mini gold" issues that have proliferated among Pacific island jurisdictions over the past decade — legal tender face values assigned to coins whose gold content is worth multiples of the nominal denomination, produced almost entirely for the collector market rather than circulation. The Buffalo design here borrows equity from the U.S. American Gold Buffalo series, itself based on James Earle Fraser's 1913 Buffalo nickel. Cook Islands has no mint of its own; these are contract-struck, typically in facilities operating under license.

At 0.2 g, the gold content is fractional enough that production tolerances matter more than spot price.