Do Lincoln Roll Searchers Keep S Mint Cents?

I think there is something special about finding S mint marks on any coin. In the Eastern US they have never been plentiful. I don't roll search much but I look at every coin I get and have been saving cents, especially the copper ones, since 1974. Only the 1974-S have I been able to get a full roll, and the great majority of these were obtained years ago. I know they are aren't worth a premium (except for the copper) but I save them anyway.

Of course, their worth a little over face value, at least most are.