The 2015 Australia Kookaburra 25th Anniversary 3 oz Silver Proof-Like Coin/Bar Box is a commemorative coin minted by The Perth Mint in Australia. This coin contains 3 oz of. 9999 fine silver and is certified by the mint as a proof-like strike type. With a limited mintage of 3500, this coin features a special 25th Anniversary design of the iconic Kookaburra bird, making it a valuable and collectible piece for any coin enthusiast or investor looking to add some Australian flavour to their collection.