Cook Islands 1998 Silver 5 Coin Set Australian Fauna Threatened Species. Cook Islands 1998 Silver 5 Coin Set FDC Australian Fauna Threatened Species. Obverse: Elizabeth II to right, legend around. Reverse: Australian Fauna, Threatened Species designs. A superb proof five coin silver collection, issued by the Cook Islands. This remarkable silver coin collection is from the Perth Mint, was struck in 99.9% fine silver under the authority of the Cook Islands. A total of 1,215 Australian native species are threatened, and five have been commemorated on these superb silver proof coins. The Duck-Billed Platypus; The Ghost Bat; The Ring-Tailed Gecko; The Flatback Turtle; The Bilby. The obverse design on each coin features the Raphael Maklouf portrait of Her Majesty Queen Elizabeth II. Just 4,000 sets were released around the world, it still remains incredibly tough to get some 12 years after it was issued! Each coin is housed in its original plastic capsule within a beautifully presented case, and is accompanied by the certificate of authenticity. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Mauris tempor sit amet arcu eu aliquet. Sed condimentum justo et nisi molestie, eu rhoncus lorem elementum.