2 Dollars - Charles III SpongeBob SquarePants

Tuvalu has long exploited its status as a Commonwealth realm to issue legal tender collector coins bearing the British monarch's effigy alongside licensed pop-culture imagery — a revenue stream that funds a disproportionate share of the island nation's government budget given its population of under 12,000. This piece pairs Charles III's first full year of coinage with a Nickelodeon property that debuted in 1999 and remains one of the highest-grossing entertainment franchises in children's media.

The two-troy-ounce format places it squarely in the bullion-adjacent collector market, though Viacom/Paramount licensing fees mean the actual silver content rarely determines secondary market pricing.