High Quality Content by WIKIPEDIA articles! The Canadian Gold Maple Leaf is the official bullion gold coin of Canada, and is produced by the Royal Canadian Mint. The brainchild of Walter Ott, it is one of the purest gold regular-issue coins in the world with a gold content of .9999 millesimal fineness (24 carats), with some special issues .99999 fine. That is, it contains virtually no base metals at all—only gold, from mines in Canada.