10 Dollars - Elizabeth II Great Wall

Part of a long-running Cook Islands "Wonders of the World" program that leaned heavily on the collectibles market rather than domestic circulation — these were never intended to pass through a cashier's till. Cook Islands has operated this kind of licensing arrangement with foreign minting partners for decades, producing legal-tender coins for a population of roughly 17,000 people who will never see most of them.

The Great Wall designation here refers to a UNESCO World Heritage listing that was formally extended in 1987, though the structure itself spans multiple dynasties from the 7th century BC through the Ming period.