1 Dollar - Charles III SpongeBob SquarePants

Tuvalu has issued legal tender commemorative coinage through arrangements with the Perth Mint for decades, using its sovereign status to produce collectibles that bear no relationship to its actual circulating currency. This piece is part of that commercial program — a licensed Nickelodeon product packaged as a coin. The .9999 fine silver content is the genuine draw; the rest is marketing infrastructure wearing a crown.