I would like it was a struck through a piece of debris. But it maybe a lamination if if flowed longer in a specific direction. But just not seeing that on the fields and devices on that area. Looks too square to be a lamination. Lamination debris are rolled onto the stock material and makes them longer in a direction. Just not seeing this on this coin.
Also the location is odd. Lamination issues tend to be loosened during the setup process. Struck through are often placed more away from the edge. but can wrap over an edge of a coin because of being struck onto the coin during the strike.