Canadian Silver Maple Leaf Coins Monster box of 500 coins. The distinctive Silver Maple Leaf debuted in 1988 and has been a highly sought-after bullion investment coin from the Royal Canadian Mint. The Silver Maple Leaf Coin has a face value of $5 and is made using one ounce (31.11 grams) of 9999 pure silver. Radial lines, a micro-engraved maple leaf, and Silver DNA anti-counterfeiting technology are three distinctive elements of every one-ounce 99.99% pure Silver Maple Leaf bullion coin that increase security. The Royal Canadian Mint’s unique MINTSHIELD TM technology, which is applied to every Silver Maple Leaf bullion coin dated 2018 or later, is the world’s first and only solution scientifically proven to reduce white spots on silver bullion coins.