This item is a Kern 400-day torsion anniversary clock, a vintage timepiece produced in Germany. Manufacturer: Kern, known for manufacturing precision torsion pendulum clocks. Mechanism: These clocks are designed to run for approximately 400 days on a single winding, traditionally wound on an anniversary date. Design: Features a brass cased carriage style with glass panels, showcasing the slow-moving four-ball torsion pendulum. Does work but have no key