Seth Thomas 4 Jewels 8 Day Gothic Art Deco Mahogany Mantel Shelf Clock. Estate find an antique 1920's seth thomas 8 day gothic art deco mantel shelf desk clock, with jeweled 4 day brass mechanical wind-up movement that winds and sets from the rear.The dial is a gold brass metal art deco dial with roman numerals, signed "Seth Thomas 4 jewels made in the USA". The case is a beautiful mahogany footed wood case with the clock supported by a pair of decorative deco side columns. The clock is fully wound and currently not working. Some wear on the wood, overall in good condition. This would be a fabulous addition to your collection.