It is damage to the outside edge of the die. Had some damage done on that area. I've not seen this before but I have seen the die dents:



And one image of a die damaged area where the die must have been dropped.

The way you can tell they are a die dent, or damage, is that the affected area isn't taller than the rim.
CoopHome : What does die dents and damage to the die look like?



And one image of a die damaged area where the die must have been dropped.

The way you can tell they are a die dent, or damage, is that the affected area isn't taller than the rim.
CoopHome : What does die dents and damage to the die look like?





























