Bronze coins are currency made primarily from a mixture of copper and tin, often with small amounts of other metals. They have been used throughout history in various cultures, including the Roman Empire and ancient China. Bronze coins are known for their durability and resistance to corrosion, making them suitable for everyday transactions. These coins typically feature designs that represent the issuing authority, such as rulers or symbols of the state. Over time, bronze coins have become collectible items, with some ancient examples valued for their historical significance and craftsmanship.