Bullion coins are coins made primarily of precious metals, such as gold, silver, platinum, or palladium. They are valued based on their metal content rather than their face value, making them popular among investors and collectors. These coins are often produced by government mints and come in various weights and purities. The most well-known bullion coins include the American Eagle, Canadian Maple Leaf, and South African Krugerrand. Investors buy bullion coins as a way to hedge against inflation and economic uncertainty, as their value tends to rise with the price of the underlying metal.