2018 50c Gold Plated Uncirculated Coin, Gold Coast 2018. One of Australia's honours in 2018 is hosting the XXI Commonwealth Games. Our stunning Gold Coast, with it's golden sun and sandy beaches, hosted athletes from 70 nations and territories. These competitors are fine ambassadors for their sports, performing at an elite level in their quest for gold medal glory. This gold plated coin is a fitting memento of all that our country has to share during the eleven days of competition. Mintage 20,000. TO find out more on this item please contact Adelaide Exchange Jewellers.