When Tiffany Studios reorganized into Tiffany Furnaces, they added enameling to their repetoire, which is the highlight of this wonderful, totally original clock. It's actually in good working order, having been to a clockmaker recently. Usually I sell clocks as decorative items and don't guarantee the mechanism, but not in this case. Sold originally by Tiffany & Co. It's signed Tiffany & Co. on the face and Louis C. Tiffany Furnaces, Inc. on the underside of the case. The mechanism is by Chelsea, one of the finest of American makers.