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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!