25 Dollars - Charles III Bullion Giants

The Solomon Islands has functioned for decades as a convenient legal-tender vehicle for international bullion and commemorative programs, with the actual minting contracted to private refiners and distributors — most commonly the New Zealand Mint or European houses — who handle design, production, and sales entirely outside the issuing nation's economy. The nominal face value bears no relation to silver spot, and the coins never circulate domestically.

At one kilogram of .999 silver, this belongs to a product category driven almost entirely by the stacking and novelty collector market that expanded sharply after 2010.