US coinage (> dime denomination) was 90% silver until 1964. Given the "war on cash" I don't believe anyone would regret owing these coins by the bag, which are still available from dealers at a small premium to spot price. You can store a large quantity in a small safe. The US and Canadian mints also sell 500 oz. "Monster Boxes" of Eagles and Maple Leafs, for large purchasers. Great for peace of mind...