With Rolex International Service Guarantee stating that the present watch has undergone a complete overhaul on 12 November 2008 and copy of Rolex servicing invoice of the same date. Furthermore delivered with Rolex fax copy dated 31 October 2002 in French stating that the present watch was made in 1973 and sold to Comex.
As of the late 1960s, Rolex supplied different Submariner models featuring the patented gas escape valve to the side to COMEX (Compagnie Maritime d'Expertise) in Marseille, a professional diving operation for the oil industry.
Reference 5513, such as the present watch, was the first of these models, depth rated to 660 ft (220 m), with the COMEX designation on the outside of the screw back and on the dial. Part or the entire serial number was repeated to the inside of the case back, a feature only seen on ref. 5513 supplied to COMEX and to military forces. The case back of the present watch bears reference 5513 and 781, the last three digits of the serial number.