Pure Silver Coin – Canada 150 Iconic Maple Leaf – Mintage: 6,000 (2017). First issued in 1988, the Silver Maple Leaf (SML) coin is highly valued by collectors and investors worldwide for its outstanding combination of craftsmanship, purity and design. While one ounce bullion coins are produced in large quantities according to investor demand, the mintage of this two ounce collector coin is extremely limited to only 6,000. As a pure silver coin issued by the Royal Canadian Mint. Weight: 62.69 grams. Bullion Weight: 2.016 Troy Ounces.