Case material: Yellow gold; Charge: Automatic; Conditions: New Presentation condition : With dealer guarantee ; Model: Constellation Price on request Gmtbroker Reference: 123.50.31.20.55.002 Omega 123.50.31.20.55.002 Complete Details: 18kt yellow gold case and bracelet Mother-of-pearl dial with 11 diamond hour markers Displays date at 3 o'clock Omega 8521 Co-Axial Escapement movement Power Reserve: about 50 hours This watch is also known as 12350312055002