It does look like a striking issue. If it was a very hard strike, it could cause this. But when we see these in a roll, then we would know it is was a one time event, or part of a die event. The reverse is showing split plating on the CENT area. I don't feel it is a die crack because it doesn't meet a rim area. Also it would affect the devices near the Memorial more, than that area of the design. (The Memorial needs more metal to be left on that area, thus we see a lot of die cracks on the corners of the building) So I discounted the die crack theory. With the location on the obverse, it doesn't show like the
Ridge Ring area on a
DDD issue. So it must be linear plating bubbles that were raised, and split on the reverse. It's not
DDD as it doesn't show in the normal areas that would be affected. Interesting coin though.