Some type of doubling (or maybe blister?) at the bottom of the letters O, N, E and C. There's also something on the obverse which looks like die chips, but I'm not sure. I don't believe it's a scratch as it's raised.
Appears to be plating blisters going through the date. Also the doubling you see I think is caused by machine doubling.
I thought it might be MD, just looked weird like the metal was moved by the letters (I'm sure it wasn't, just looked that way.) Thanks!