From our friends to the north, Canadian Gold Maple Leafs is one of the purest gold bullion coins available in the world today. They contain .9999 millesimal fineness (24-karat) of gold, meaning they hardly contain any base metals (i.e. copper, zinc, iron, nickel, etc.) at all. Some special issues are made at a .99999 fineness.
Canadian Gold Maple Leaf Coins
January 30, 2013