Royal Canadian Mint "Monster Box" | Empty These empty "Monster" boxes are ideal for storing your Silver Maples and other numismatic and bullion treasures! Secure your store of wealth with a Monster box from the Royal Canadian Mint, perfect for storing Silver Maples. Each empty yellow Monster box can hold up to 500 Silver Maple Leaf coins protected in 20 tubes with each containing 25 coins. Condition: Used (Excellent Condition - Like New) Coins and Tubes are NOT included