With a full ounce of 99.99% pure silver, and a design that changes annually, Australia's silver bullion coins are collector favorites. The silver issues of 1991 are no exception. Each specimen is one of just 300,000 struck worldwide - perfect for your collection. Australia's Kookaburra is the only major legal tender silver bullion coin to change its design annually. Each year since 1990, the reverse has featured a new rendition of the Kookaburra, a bird symbolic of Australia's wildlife treasures. This version depicts a kookaburra perched on a tree. Order today!