2013 $1 Kangaroo 20th Anniversary Edition 1oz Silver Proof CoinThe kangaroo first appeared on Australias coins in 1938 when it hopped onto the halfpenny and penny. This original design by George Kruger Gray was used until 1964, when the existing coins ceased production with the introduction of Australias decimal coinage system. The first decimal coins minted in 1965 did not feature a kangaroo design. It was not until 1984 when the $1 coin replaced the $1 note that a coin featuring the now familiar five bounding