20 Dollars - Elizabeth II Dendera Zodiac

The Dendera Zodiac is not an artifact of ancient astronomical precision so much as a political one — carved into the ceiling of the Hathor temple at Dendera during the Ptolemaic period, likely between 50 and 30 BC, it blends Egyptian decans with Babylonian zodiacal signs imported through Greek intermediaries. Napoleon's soldiers removed the original sandstone slab in 1821; it has been in the Louvre ever since, replaced at Dendera by a plaster cast.

Cook Islands has issued commemorative silver in this format extensively since the 2010s, with the program administered through licensing arrangements rather than any domestic minting capacity.