Case material: Gold Steel; Charge: Automatic; Conditions: New Presentation condition : With dealer guarantee ; Model: Constellation Price on request Gmtbroker Reference: 123.20.27.20.57.001 Omega 123.20.27.20.57.001 Complete Details: Brushed stainless steel and 18kt rose gold case and bracelet. Brushed and polished 18kt rose gold bezel with engraved Roman numeral hour markers. Fancy Gold Mother of Pearl dial with luminescent gold hands. 11 diamond hour markers. Date window displayed at the 3 o'clock position. Omega Co-Axial Escapement movement  - Caliber  8520 with a rhodium-plated finish. This ultra-precise movement features automatic winding in both directions and has a power reserve of 50 hours. This watch is also known as 12320272057001