10 Dollars - Elizabeth II Britannia

The Britannia bullion series, originally a British Royal Mint product launched in 1987, has since spawned a sprawling secondary market of licensed and unlicensed derivatives issued through smaller jurisdictions. Solomon Islands has been a prolific participant in this cottage industry, lending its legal tender framework to fractional gold pieces that have no meaningful domestic circulation function. At 0.5 grams, this piece sits at the lower boundary of what refiners consider economically sensible to produce in .9999 fineness.