10 Dollars - Charles III Buffalo

At 0.311 g of five-nines gold, this is a fractional struck to the same purity standard that the Royal Canadian Mint pioneered with its Million Dollar Coin project in 2007 — a benchmark that pushed refining technology and forced competitors to match it. The Solomon Islands has no domestic mint; these are produced under license arrangements typical of the Pacific sovereign coin programs that exist primarily as vehicles for bullion collectibles rather than circulating currency.