This coin is one ounce of .999 pure silver. This is one of Australia’s favorite collectable silver coins because the design changes each year. On the front of the coin, you can find a koala on the branch of a eucalyptus tree. On the bottom right side of the design, you can find a small P which is Perth Mint’s symbol of quality and authenticity. Also, on the front of the coin you can find the year of the coin which is 2018, the weight of the coin which is one ounce, and the purity of the coin which is .999 pure silver. On the back you can find the profile of Queen Elizabeth II along with the face value of the coin which is one dollar. The coin has a diameter of 40.6 mm and a thickness of 4 mm. Like all of our other silver coins, this one is guaranteed to be 100% authentic. Item comes wrapped and packaged safe for delivery.