Or a struck through debris issue. If struck through debris, the weight should be closer to 3.11 grams. The reason I went with debris rather than lamination is that lamination issue tend to flow in a straight line. (Because the metal was cold rolled and stretched when making the metal thickness correct) Thus a piece of debris can be any shape, or re-shaped after the strike on to the planchet during the strike. This looks like a very thin debris thickness.