With all due respect, I think if you're asking us what to look for, you might want to ask yourself why you're doing it in the first place.
All I mean is, if you want to find rare pennies search pennies, if you want to find rare dimes search dimes. If you want to find silver, now that's a specific question we can try to answer, although at this point halves are producing terribly so you may want to search dimes.
Please though people, I'm happy to help anyone out, but questions have to be a bit more specific, or all you're asking us to do is voluntarily give our time to make up for time you personally don't want to spend