One gold coin equals 94 cents. It is the currency of the Mushroom Kingdom and the Koopa Kingdom. No one knows why it exists nor do they care. Shipt! This article is a stub. You can help the King Harkinian Wiki by blowing it up. Retrieved from "https://king-harkinian.fandom.com/wiki/Gold_coins?oldid=29112" Categories: Stubs Currency Gold Appears in the Mario Cartoons Mario Community content is available under CC-BY-SA unless otherwise noted.