This is no laughing matter. The 2021 1 Kilo Silver Kookaburra coin is really one kilo of 99.99% pure silver and weighs in at 32.151 troy oz. Kookaburras are known for their laughing bird calls to signal to other Kookaburras they live in the area but they might become a bit more famous for throwing their silver weight, 1 kilo, around. This 2021 version of the coin is the 35th in the Kookaburra series from The Perth Mint. Other weights in this series include the 10 oz and 1 oz which, you can find available on our website.