On a die the design is just opposite that of a coin. The fields are the outside edge of the die and the devices are deeper into the die. So when a die is polished, the fields are affected first. The thinning starts showing on the fields by altering the sub devices. (Initials and the neck area. When this is deep, then it remove more and more of the sub devices. Thus the face is not affected, but the neck and initials on the designs are affected. This done to rescue the die to keep using it. When it gets deeper, then the more of the devices will be affected:

While they look interesting, they are just from over polished dies.

While they look interesting, they are just from over polished dies.
























