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BJS:
Comex and Rolex: A marriage made in heaven

Comex (Compagnie Maritime E d’Expertise) were a diving company based in Marseilles that specialised in deep sea diving for the oil industry. The Rolex Watch Company had very close contacts with the french diving company, and in collaboration they researched the problems caused to diving watches such as the Rolex Submariner model ref 5513 when divers de-pressurised in the chambers.

The divers found that the helium molecules trapped in a watchcase during the time spent in the pressurised chambers undersea caused a build up of pressure. This resulted in the balances to fail and, the glasses to be blown off when they were brought back to atmospheric pressure faster than the helium could escape the watchcase.

Rolex Comex Submariner Unique ref 5514 (with "Gas Escape Valve")

Patented by Rolex Watch Company in 1967 the "Gas Escape Valve" was born. It was fitted on the side of the watchcase at the discreet but visible nine o'clock position. This simple engineering masterpiece ensured that during decompression the gases were released from the watchcase.

The "Gas Escape Valve" was first fitted on the Rolex Comex Submariner model ref 5513 with Comex markings on the case and later Rolex produced a Unique Model ref for Comex, namely the Rolex Submariner model ref 5514.

The development of the "Gas Escape Valve" and its connections with COMEX gave Rolex the opportunity to develop and market a commercially unique diving watch. Features such as:-

-Markings on the case back (giving it the look of a Rolex Comex)

-Gas Escape Valve

-Date feature

-Part or Full serial number engraved inside the case back (only seen on Comex 5513 and Military Subs)

Some called it a "gimmick" as few if any consumer would ever be called to find themselves anywhere near 2000 feet undersea!

Link zum Forum:

http://www.bjsonline.com/watches/for....php?board=2.0

Dann der Link zu Elmar:

http://www.oysterinfo.de/de/geschichte/sd/index.php

Hier eine 16800, achtet auf die Papers. Uhr wurde bei Ebay verkauft.





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