Watch is in good working condition, with signs of wearing Case is gold-plated with engraving on back case (shown on pictures) Ref 2493-5 Serial Number 13319757 Year 1952 Omega Caliber 283 Technical Details Lignes Dimensions 13.52 ‴ Dimensions 30.5 mm Height 5.1 mm Further Measures Mounting Diameter (Dm): 30.0mm Stem height (T): 1.7mm Mounting Height (F): 0.5mm Power Reserve 45 hours Frequency 18,000 vph Jewels 17 Lift Angle 49 degrees Complications and Specifications Shape Round Complications Sweep Second Shock Protection Incabloc Regulator Type Pinned Regulator (or Index Regulator) Movement Type Manual Escapement Type Swiss Lever Control Type Balance Wheel Winding Type Stem Winding Setting Type Stem Set Additional Information Hand Sizes 1.70 x 0.95 x 0.24mm Hand Count 3 Country Of Manufacture Switzerland Breguet hairspring Incabloc Other data: balance staff: U2764 stem: W621 mainspring / battery: 1.50 x 11.5 x 0.135mm balance staff ronda: 1858 (13) balance staff ronda: 2846 (13,25) stem ronda: 92 (13) Mainspring: 1.500 x 11.000 x 0.135 x 340.000 mm