No need to sand it off. First take a razor blade and cut around the stone guard as close as you can. Then take a blow dryer set it on high. Then heat it up don’t get it to hot. Lift up the edge using a old butter knife or putty knife and peel it up slow. It will come off this way. Now for what it will look like after is anyone’s guess. If you are lucky the old paint will be a close match.