He probably didn't mean non-silver, he meant coins that have a numismatic value above their metal value, regardless what kind of metal they are made of.
Assuming I'm correct, the advice above still applies...every LCS is different and you won't know unless you ask. That said, most LCS's are really just selling silver and maybe interested in graded coins. You probably won't have much luck trying to sell non-graded coins for a reasonable price. Unfortunately, feebay is your best bet. Also, most merc's and WLH don't really carry a premium. Matter of fact, when silver prices are high, you'll sometimes find stores/people selling WLH for a discount. WLH are typically worn and don't weigh as much (in quantity) as Kennedy's and Franklin's. Their metal value can exceed any added numismatic value.
OO