The obverse of these 10 coins features the Queen Elizabeth II, with a face value of $1. The below is the image of the obverse side of the IYA2009 coin issued by Cook Island.
The 10 reverse sides depict the the Sun, 8 planets of the solar system, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and the solar system, itself in a single reverse side. Significantly the designers of these Cook Island IYA2009 coins has associated Roman & Greek mythology with coins, for each of the reverse side also features a portrait of corresponding God or Goddess from the ancient mythology. Additionally they also have in them astrological symbols of each planetary body, represented.
Here are the reverse sides and the obverse side again of IYA2009 Cook Island coins.
Here are the specifications of IYA2009 Commemorative Coins of Cook Island
Diameter : 40.0 mm
Weight : 27.0 g
Composition : Copper (Cu), silver plated with padprinting
Mintage : 5 000
In fact this Polynesian island has the largest variety of IYA2009 coins issued by a single country. These elegant IYA2009 coins of Cook Island come enclosed in an official box with certificates as follows.