Coin engraving is the process of creating a design or pattern on the surface of a coin. This can be done by hand, using tools such as chisels and burins, or with machines such as milling machines and lathes. The end result is a unique piece of art that can be used for commemorative coins, currency, jewelry, or any other type of collectible item. Coin engraving requires skill and precision to ensure that the design is accurate and attractive. With the right tools and techniques, you can create beautiful pieces that will last for generations.