Just die wear. Note the direction. That is the dies wear, towards the closest rims.
Depending of the location on the die, the devices will wear in a certain pattern.
Why? Because die flow starts on the center of the design, pushing the metal towards the rims. (also filling the collars with the plain or reeds of the coin) The planchet is a bit smaller than the collar, so the metal shape is determined by metal movement of the dies. If the metal is a little short the areas with the largest fill with get the metal first. If an are is weaker, it was because the metal was not pushed because there were not enough there. Also the filling of grease in the dies, will also provide more metal on some strikes making the design to show up very nicely. So the date on the cents are pushed to the SE. Liberty is pushed West. The motto is pressed into the direction of the closest rim. Same happens on the reverse. Several coins per second are struck, so the process is not a long one. But that is why the metal wears in the direction on the devices because of the constant moving of the metal. Making die flow lines, weakening devices on the outside edges of the older dies. It is a constant movement hundreds of thousand of time, that cause the breakdown of the dies.
CoopHome:
Why does die wear always show in the same direction?Edited by coop
05/25/2022 4:40 pm
Posted 05/25/2022 12:32 am
? can't really tell with the blurry images.
