I love these show n tell threads. Wonderful coins folks! 1877-S which could be the S/horizontal S variety. A very kind CT member eyed the variety for me, but I just can't get good mint mark pics.
Nope Robec does not play fair I think I've managed to "match" him once or twice but that about the best I can do lol...
Possibly dipped at one time even recent. It is unlikely that a silver coin is still blast white after 90 years.