From the family collection passed on to me. S mint mark Not sure of how it would grade. Funny that the obverse is silver color, but the reverse is darker and shows up coppery in the pic.
IDK what that green stuff is, but acetone won't hurt it. Nice coin, low mintage. The reverse is nicer than the obverse. I am around VG-10/F-15 with a net grade of F-12.
The obverse is worn, but old low mintage silver used to get a little slack. So I was taking that in to account. The reverse is much better than G-06
In my opinion, no way a fine. I'm in the Good range as well. Only 1 letter in Liberty at best. Still a nice coin to have in a collection. I actually need only the 1875 half to complete a year set.