As all metal detectorists, I have found a ton of trash while digging for treasure. Much of that trash is deeply pitted, bent or partially corroded away modern coins that are in such bad shape they cannot be placed into circulation. Since the banks will not accept these coins, I presume laws against defacing coins would not apply. Does anyone know anything different? I have been considering taking a collection of these coins and resin casting them into coasters as a bit of a joke about my treasure finds. Has anyone tried this? Any legal reason not to do it?