FERDINAND BERTHOUD, GOLD SQUELETTE POCKET WATCH, QUARTER REPEATER, SWISS 1807 54 mm diameter yellow gold case, smooth case back, carrure decorated with pencils, band dial, visible movement, snap-in dust cover, signed, movement with hour and quarter repeater, rod escapement, signed movement. Watch currently in working order, with winding key. Weight approx. 111.8 g FERDINAND BERTHOUD, QUARTER REPEATER SQUELETTE VERGE POCKET WATCH, IN GOLD CASE, SWITZERLAND 1807 Ferdinand Berthoud (Plancemont-sur-Couvet, 18 March 1727 ; Groslay, 20 June 1807) was a French watchmaker. In 1753 he was awarded the title of Master Watchmaker in Paris. Clockmaker and Mechanic to the King and the Navy, he left a very rich heritage of works, particularly in the field of marine chronometers.