IWC. A FINE AND VERY RARE 18K GOLD AUTOMATIC WRISTWATCH WITH SWEEP CENTRE SECONDS AND CLOISONNE ENAMEL DIAL SIGNED INTERNATIONAL WATCH CO. REF. 580, CASE NO. 1’265’876, MOVEMENT NO. 1’246’116, CIRCA 1953 Movement: cal. 85, automatic, 23 jewels, signed Dial: cloisonné enamel, signed Case: snap on back, 35 mm. diam., signed With: IWC Extract from the Archives confirming the date of delivery of the present watch as 7 January 1953.