Sorry to hear about the water damage. Before you go the reprint route, it's worth checking the usual arcade artwork archives (the Arcade Flyer Archive and similar preservation projects) since Gauntlet was a very common cabinet and someone has likely scanned a bezel/CPO already. If you can't find a match there, posting the exact cabinet variant (US/dedicated vs conversion kit) helps others point you to the right scan, since artwork differed between releases.