after your answer, It made exact sense. I have seen the same "metal running/blobbing out over design, with die chips/chunks broken away.....near the collar. After your explanation, I clearly recognize that the outcome(though unique) is the result of die chip.
when it is discovered by technicians, that the die has wear enough to cause these die chips; is it something that is quickly repaired-or something they just let roll through...until it's convenient to fix?
oh, and btw, I have already read ( a dozen times over ) the glossaries, definitions-etc, and this coin stuff only gets a tiny bit MORE confusing...each time I get going. I realize, it's an ever changing, dynamic kind of thing with new production constantly...I appreciate you and others like you! take care.