20 Dollars - Elizabeth II 4th Century

This issue belongs to a Cook Islands commemorative silver program from the late 1990s that exploited the nation's licensed minting rights — a revenue arrangement common among Pacific island territories with no meaningful domestic coin circulation. The "4th Century" designation refers to a themed historical series rather than any event specific to Cook Islands history.

KM#886 is one of dozens of nearly identical collector issues produced under this framework by external minting contractors, most commonly the Pobjoy Mint or B.H. Mayer's Kunstprägeanstalt, depending on the contract year.