10 Dollars - Charles III Guadalajara

At 0.155 grams of .9999 gold, this belongs to a class of fractional bullion issues — sometimes called "mini golds" — that proliferated among Pacific island sovereigns in the 2020s as mints sought accessible price points for retail gold buyers. Solomon Islands has no domestic gold refining capacity; these are produced under license by external minting houses and carry legal tender status largely as a technicality.