Gold Coin is one of the six skins released under the Arcade Games offer. It could be individually purchased using game coins in mid August 2017.
Gold Coin could be purchased in the Skins Shop under the ‘Arcade’ tab for 690 coins. It was available for a limited time and may not be available for purchase in the future.
Details of this offer can vary depending on location, platform or time.
Note: The Arcade Games offer with the Gold Coin skin was released again for a limited time in mid May 2018. The price for Gold Coin remained the same at 690 coins.