Ulysse Nardin in working condition. Serial number 4342308 indicates that watch is made in 1959y Case Original UN Locle Stainless Steel & Gold Plated Name Ulysse Nardin Felsa 690 Manufacturer Ulysse Launch Year 1955 Is COSC certified No Technical Details Lignes Dimensions 11.5 ‴ Dimensions 26.3 mm Height 5.85 mm Further Measures Mounting Diameter (Dm): 26.0mm Stem height (T): 2.1mm Mounting Height (F): 1.6mm Power Reserve 44 hours Frequency 18,000 vph Jewels 21 Complications and Specifications Shape Round Complications Sweep Second Moon Phase Shock Protection Incabloc Regulator Type Pinned Regulator (or Index Regulator) Movement Type Automatic Rotor Type Central Rotor Escapement Type Swiss Lever Control Type Balance Wheel Winding Type Automatic (Self-Winding) Setting Type Stem Set