Metallic coins are small, flat pieces of metal used as currency for trade and transactions. They are typically made from various metals, such as copper, nickel, and zinc, which can be combined to create alloys. Coins often feature designs, symbols, or images that represent a country or culture, making them not only functional but also collectible. The use of metallic coins dates back thousands of years, with the first known coins originating in Lydia around 600 BCE. Today, coins are produced by national mints and come in different denominations, each with a specific value. They play a crucial role in everyday commerce and are an essential part of the global economy.