Zinc cents break by heart. I don't bother looking for any zinc cent errors because of this kind of thing. It's pointless to me. Those things rot so that even if you did have something cool, chances are that it won't matter in the long term. Unless it's something obvious like the
WAM coins, I don't bother with them. In fact, after stopping at a store I usually cull the coppers and toss the rest out the window.