Obverse
Big decorated symbol "?", at left, small effigy of HM Queen Elizabeth II facing right
Lettering: ? ARCHEOLOGY & SYMBOLISM IRB ELIZABETH II COOK ISLANDS 20 DOLLARS
Reverse
The Antikythera mechanism in ultra high relief. Around are the various bas sculptures from ancient Greece. Surrounded by a circle of waves and metal ornaments.
Lettering: 20 23 ANTIKYTHERA MECHANISM