First released in 1990, Australia’s iconic Silver Kookaburra coin marked its 25th anniversary in 2015 with a stunning 5 oz high-relief edition. Struck by The Perth Mint from 99.9% pure silver in proof quality, this coin features the original 1990 reverse design of an adult kookaburra perched on a tree stump, surrounded by native eucalyptus leaves and ferns.