Case material: Steel; Charge: Automatic; Conditions: New Presentation condition : With dealer guarantee ; Model: Constellation Lady Price on request Gmtbroker Reference: 123.20.31.20.55.004 Omega 123.20.31.20.55.004 Complete Details: Stainless steel case and bracelet. Polished 18kt yellow gold claws White mother of pearl dial 11 diamond hour markers Displays date at 3 o'clock Omega 8520 Co-Axial Escapement movement with a p ower reserve of about 50 hours This watch is also known as 12320312055004