I'm not sure what to make of this 1995-P LMC. There is a curved, raised line on the obverse. If it wasn't raised, I would think it was damage from two cents being pressed together. It is thin like a die crack, not thicker like the remnants of a normal rad MAD clash. I am stumped. I found a free photo editor online that lets you do overlays. I tried to do one (my first ever) and it seems to match up with the degree of curvature of a cent. Take a look and any help is greatly appreciated!
I don't think it could be a clash. Abe's shoulder is one of the deepest areas of the obverse die and it would be difficult for the opposite die to make contact there. Possibly it's a die scratch or a gas bubble.
Ken, I finally poked it with a wooden toothpick to rule out the plating bubble. Atrox001, that seems to be the consensus. Thanks all!