I think what your seeing is a " Haze " effect, cleaning solvent can do that, to me, looks like they left it on to long, and burned the coin, thats...
Let me help you out a little bit, since your new to coins, if your coin doesn't have the " spoke " effect, when you move it, back and forth, its...
Looks like Captain Americas, shield
Clean, then Acid dipped, and whatever else they could put on it, its burned really bad ...
Separate names with a comma.