What in the world could have happened to this coin? I see the small cud error on the left upper side of the reverse, but is the rest of this possibly an error or what in the world is going on here? Thanks for any info!
Good photos, but it looks like it was in an aggressive crimping machine as stated above. The displaced metal is a key sign of damage. Keep looking!
As others have stated, I believe that is just PMD caused by something. What something? Who knows but the person that did it. Looks like a tool of some type has cut and then pushed metal to the edge, long before its years of wear, so that "bump" that looks like it might be a CUD, is just excess metal pushed up and then worn from circulation age.