Obverse: The obverse of the coin features a portrait of Queen Elizabeth II. Alongside it is the inscription of the Queen's name and title ELIZABETH II, the country of origin COOK ISLANDS, and the year of issue 1990.
Reverse: The reverse of the coin depicts an American bison. Next to it is the inscription ENDANGERED WORLD WILDLIFE. At the bottom, the nominal value of the coin, 50 DOLLARS, is indicated.
About the coin: This 50-dollar silver coin is one of the "Endangered Wildlife" series coins. The goal of this series is to raise awareness about endangered species and help protect these animals.