198? /1 cent. Strukthrough grease?

[279773]

Im too new to speculate much on this one. Either pmd or something else. Strukthrough cloth?

[MintErrors]

In my opinion, this looks like post mint damage. IF this coin was a zinc coin, it could have easily been face down in the ground for a period of time. It's too flat to be a greaser, as the are usually blotchy and some features of the coin are sharp. This coin, it's flat like in appearance, almost looks like environmental damage, or, some one used a sander on it.

[Petespockets55]

I agree with the sander or ground down with a wet stone.