2018 $1 Australian Posters of World War I Peace Bonds 1oz Silver Coloured Proof Rectangle Shaped CoinFollowing the end of the First World War, the Australian Government launched a series of Peace Loan campaigns, which were managed by the Commonwealth Bank of Australia, with the aim of recouping the costs of the war and helping to fund the pensions of returned servicemen. The coins reverse features a coloured representation of the Buy Peace Bonds poster headed by the inscription AUSTRALIAN PEACE BONDS and The Perth Mints traditional P mintmark.