Long soak in distilled water first, and then see what it looks like. Re-post before going any further.
If it was me - I would just take it to the local shop for silver content. I am not sure how much damage is hiding in there.
Very true - or a 42/1 variety. I just spent this last Friday trying to cherry pick the local dealer. I don't think that variety will slip past them.
But, then again. Isn't it refreshing to have someone ask first, instead of showing the results of destructive experiments and then asking. End result may be, and probably should be, taking and selling for melt, but wouldn't it be interesting to walk someone through a proper process not involving chemicals such as vinegar or other methods of harsh cleaning. After all, it is "just a dime".
Depends on how much water you put it in. Distilled water acts by absorbing mineral ions, thereby removing them from the coin. I would throw it in a 16 ounce cup for a day, then change the water. Then leave it in the second glass a few days. If there is no observable improvement by then I seriously doubt there ever will be.
No saving it - it will always be a cleaned and damaged coin. Distilled water isn't going to do anything. If you're determined, soak it in muriatic acid for a few minutes and chip away at it with a toothpick.
Yeah, Thad is right. How US collectors view such things, it can never be saved. I guess I am too used to ancients.