In order to upgrade our profound review of the history of Sea-Dweller, we now explore some unique replica Rolex Sea-Dweller models—the COMEX editions. For the full back-story of the Sea-Dweller, please begin with our article on the Sea-Dweller Double Red Sea-Dweller and continue through all six parts. Maybe you have already read on and enjoy our last chapter of our Sea-Dweller history series.
As a matter of fact, this model is the French commercial diving company that commissioned the replica Rolex to create dive watches. COMEX needed watches which could plunge down to extreme depths, handle pressurized chambers, and survive ensuing decompression periods. Enter the Sea-Dweller. While this collaboration between COMEX and Rolex eventually gave birth to the Sea-Dweller collection for the public, there were special COMEX editions that were reserved for the companies’ employees only.
To begin with, these were especially issued to COMEX employees, therefore, never available to the public for sale. They were built as tool watches to get a job done. The watches the COMEX divers wore were an integral part of their gear. It’s important to stress that these divers did not have all the computers and technology we have today, so they were dependent on the functionality and reliability of their dive cheap replica watches. Since these watches were made to order, COMEX Sea-Dwellers replicas were manufactured in very small amount. As you can imagine, their non-availability to the public, coupled with low production numbers, makes these pieces some of the most coveted vintage Rolex watches for selling. 
Next, there are some common design details across all COMEX Sea-Dweller references. There’s certainly the obvious “COMEX” designation on the dial. What’s more, COMEX Sea-Dwellers have both the reference and serials numbers engraved on the interior of the caseback. In conclusion, COMEX had their issue numbers to keep track of which employees had which replica watches. These COMEX issue numbers are prominently engraved on the outside of the caseback encircled by other, more typical Sea-Dweller engravings.
Just like the non-COMEX Sea-Dweller, these Triple Six watches offered many enhancements. These improvements shared with better water resistance up to 4,000 feet, a bigger case to accommodate a more robust HEV, sapphire crystal, and the new Caliber 3035. There are two distinct dials of the COMEX Sea-Dweller as well. The first 50 sported matte dials and only two lines of text under the COMEX label. On the other hand, the remaining 150 watches had glossy dials and white gold surrounds on the hour markers. Besides, the “SUPERLATIVE CHRONOMETER OFFICIALLY CERTIFIED” designation increased it to four lines of text rather than just two. A Triple-Six COMEX is pretty rare so when you get an opportunity, you should take it.