Well I wasn’t signed in with my last attempt to post to this thread. But being a relatively new member these guys are on point. I work in the plating industry (nickel/chrome). The marks in the first coins picture are coated over. Also, Mountain Man is also correct. If the coin was replated look at the edges. They would have to be able to hold the coin in some type of fixture to replate it. Hi/lo depostison points create frosting/haze at contact points. Last resort - XRF will tell.