Nothing as it happens a lot. It is when the most grease happens, then there is interest in them:

This extreme. Still an educational piece to show to a new collector, to help him see why it is a
Struck Through Grease issue. (Note the width of the devices. When grease prevents the strike, the narrowest part of the devices is the top, thus the grease prevents the deepest part of the die from striking up, thus the devices will be wider than normal)
CoopHome:
Why do Struck Through Grease errors make the devices wider? grease prevents the deepest devices from being struck
Edited by coop
09/08/2022 11:59 am