Coin dies have a slight curvature, called the die radius, to help move metal during the coin striking process. When the metal flow starts wearing the flat surface (fields) of the dies by "cutting" into it then is transferred to the coins they are minting. Just like the metal deterioration flow wears out the numbers and letters (devices).
Edited by Marv65
11/18/2024 01:18 am
11/18/2024 01:18 am
























