DOXA Sub 300T Professional

DOXA Sub 300T Professional

The Father of SCUBA, Jacques Cousteau, wore a Fifty Fathoms in the Academy Award-winning documentary Le Monde du Silence, but there's another dive watch with which he's more closely associated. 

By the 1960s, following the success of Blancpain's Fifty Fathom's and Rolex's Submariner, DOXA had decided to develop a dive watch of its own. The Sub 300T Professional was the brainchild of DOXA's product manager Urs Eschle, who consulted with Cousteau and other divers in the development of this watch. The challenge set before them was to build a watch that was comfortable, rugged, and above all reliable, with a dial that could easily be read in the murky depths of the ocean.

The Sub 300T Professional debuted in 1967, with a unidirectional bezel (the first to feature the U.S. Navy No Decompression chart) and a beads-of-rice bracelet that was the first to implement an expandable clasp that could fit over a diver's wetsuit. Eschle and his team of designers had tested numerous dial colors before hitting on the now-distinctive orange. 

The result was obvious; no other watch of the era had the technological advances and thoroughness of design of the DOXA.  Cousteau himself was so impressed by the design that he offered his chain of U.S. Divers shops for distribution in the U.S., using his fame and the burgeoning hobbyist SCUBA community to spread DOXAs success.

DOXA further innovated the design of dive watches by incorporating a Helium Release Valve or HRV in the DOXA Sub 300T Conquistador. Some sources suggest that Rolex and DOXA worked in conjunction to develop this technology, Rolex using it in its Sea-Dweller. But Rolex wasn't able to mint the Sea-Dweller until 1971, making the Sub 300T Conquistador the first of its kind available to recreational--rather than professional or military--divers.   

The Sub 300T Professional with its bright orange dial is the most recognizable of all the DOXA divers. This example has a beefy cushion case and a later "big triangle" bezel with the printing on the trademark No Decompression chart in very good condition. We have something of a mania for DOXAs here at Analog/Shift, and watches like this one--with its distinctive dial and 1970s styling--make it clear why. 


Stainless steel case is approximately 42mm (excluding crown). ETA Automatic Movement. Early 1970s.

Overall Condition: Stainless steel cushion case is in excellent condition with minimal signs of use and wear and no signs of over-polishing. Bezel with No Decompression chart is in very good condition with only minor flaking, particularly at 12 o'clock. Dial is in very good condition with crisp printing and no signs of discoloration. Dial does have some signs of age, particularly to the luminescent elements of the hour markers and hands. Synchron-signed crown. Case back bears Synchron logo and is in very good condition with some minor tool marks.

Includes one 20mm dark brown leather strap.

SKU: AS01795

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