This circulating commemorative coin features a Rhesus monkey. Two Rhesus monkeys were brought to Cook Islands in 1990 for a zoo, but the zoo went out of business and the monkeys went into the care of John Abbot. I have no idea who that is, but you can read about it here.
This coin was issued in 2003 and is one of four coins issued that year featuring animals.
Thanks to Flavio G. for info on this coin.
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