Case material: Yellow gold; Charge: Automatic; Conditions: New Presentation condition : With dealer guarantee ; Price on request Gmtbroker Reference: 178278chip Rolex Oyster Perpetual Datejust Watch. 31mm 18K yellow gold case, fluted bezel, champagne dial, index hour markers, and President bracelet. Also known as: Rolex 178278 chip, Rolex 178278chip