25 Dollars - Elizabeth II Kilimanjaro

Cook Islands has issued commemorative silver under its own authority since the 1970s, leveraging a constitutional free-association arrangement with New Zealand that grants it full control over coinage while maintaining no independent central bank. The Kilimanjaro issue belongs to a long-running geography-themed series produced almost entirely for the collector market — no piece of this size and weight ever entered circulation anywhere.

At 155.5 grams, this is a five-troy-ounce format, a standard bullion increment adopted by several Pacific island issuers in the 2010s to compete directly with Perth Mint and Royal Canadian Mint products at the premium collector tier.