Rolex Datejust 36mm Stainless Steel Automatic Watch 1603 METAL: Stainless Steel. MEASUREMENTS: Case 36mm. MOVEMENT: Automatic, working order. ADDITIONAL: Ref. 1603, ser # 2242***. Circa 1970, comes on black leather strap. Watches are guaranteed to be in running order, if described as such, at the time of listing only. Watches have not been tested for features functionality, unless otherwise stated in description.