An early 20th Century Swiss lever alarm in a gunmetal open face case. Gilt three quarter plate keyless movement with two going barrels. Plain cock with polished steel regulator, compensation balance with blue steel overcoil hairspring. Club foot lever escapement. The alarm train wound by turning the crown backwards. Alarm striking on a single steel gong with a large polished steel hammer. White enamel dial with subsidiaries for seconds and alarm set, red indication for the alarm set pin, Arabic numerals, luminous hands. Plain gunmetal open face case, the back opening to form an easel stand. Gilt hand sets, hinge, thumb piece, winding button and bow. Plain gunmetal cuvette.