2017 1-OUNCE 99.99% PURE GOLD MAPLE LEAF BULLION COIN WITH UNIQUE SECURITY FEATURE THE GOLD STANDARD The Royal Canadian Mint’s Gold Maple Leaf (GML) coins are among the world’s most popular pure gold coins, having sold more than 25 million troy ounces since their introduction in 1979. The GML was also the first bullion coin to achieve the heightened standard of 9999 pure. ENHANCED SECURITY The radial lines in the new 2017 GML's field have been precisely machined to within microns on the master tooling to ensure reproducibility from die to die and coin to coin.