Case material: NA; Charge: Automatic; Conditions: New Year : 1961; Presentation condition : Without documents; Model: Day Date / President Price on request Gmtbroker Reference: 1803 Item: Very Early Rolex Oyster Perpetual Day-Date 1803 18k Yellow Gold Men's Watch with Old Style Bezel Brand: Rolex  Model: 1803 Movement: 1555 Butterfly Movement  Date: Non Quickset Date  Series Number: 640,xxx  Dial: Original non-tritium gold dial and dauphine hands Bracelet: Non Rolex leather strap Diameter: 36mm (excluding crown)  Box & Papers: No box and no paper  Authenticity: Whole watch is signed and 100% authentic (100% money back guarantee, no question!)  Working Condition: This watch has been checked by our watchmaker recently and guarantee keeping accurate time and normal wearing scratch.