Singapore Tatler - - STYLE WATCHES -

In 1953, the same year the Sub­mariner was re­leased, Rolex col­lab­o­rated with a Swiss sci­en­tist named Au­guste Pic­card, who had in­vented the deep-sea div­ing bathy­scaphe

the Oys­ter Per­pet­ual Sea-dweller Sub­mariner 2000 Ref 1665. Ca­pa­ble of depths of up to 610m, this was the very first Rolex Sea-dweller and it is es­sen­tially a Sub­mariner Ref 5513 with triple the depth rat­ing, a much thicker crys­tal, and a case re­in­forced with a one-way helium es­cape valve, as well as a patented triplock crown. Notably, it was Rolex and an­other watch com­pany, Doxa S A, that co-cre­ated the helium es­cape valve, which is to­day a req­ui­site fea­ture in all me­chan­i­cal dive watches. Ref 1665 was fa­mously nick­named the Dou­ble Red be­cause of the two lines of text printed in red that read “Sea-dweller” and “Sub­mariner 2000”. Like the Sub­mariner, it has only 15min mark­ings but dif­fers in that

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