I am trying to remove a chrome bathtub soap dish which is mounted in tile above the tub. It was installed in 1953. It's about 6-inches square...has a protruding round horizontal bar at the top and a curved level surface at the bottom where a plastic soap dish insert used to be. Two small protruding bars helped support the dish. There are no visible screws holding the fixture in place. I dont want to destroy the tile. Could it be cemented in? There is a matching toilet paper holder fixture in another wall that I would also like to replace. Any ideas?