
A coin that was improperly made by a mint is known as an error coin. Error coins, also known as mint mistakes, occur in a wide variety of "shapes, sizes, and sorts." The sheer range of minted faults makes collecting them more interesting and special. These range from things like missing elements or misalignments to double, or even triple-struck coins.
If you have any questions or comments, feel free to leave them through this form, and we'll respond as soon as possible.