Case material: Yellow gold; Charge: Automatic; Conditions: Never worn Presentation condition : Without documents; Model: GMT Master Price on request Gmtbroker Reference: 1675 Near mint preowned mens vintage Rolex GMT-MASTER in solid 18k gold on new dark brown aftermarket rubber strap designed for this watch.. Ref. 1675. 635xxx serial number(1957). Comes with its box as shown.