Prior to the return of Panerai to the market, I think that the Certina dive watches were the most "butch" watch that money could buy. Standing a massive 17.5mm proud of your wrist, this wasn't a watch which discreetly slid under a shirt cuff. Originally used by the US Navy during the first Tektite experiments, this is a very serious diving watch case.

The case is huge at 45mm wide (not including crown) x 48mm long x a massive 17.5mm thick stainless steel case with volcano-style bezel in good vintage condition with only minor scuffs and some very small nicks to the finish.

The original ultra thick flat high-pressure mineral crystal is in perfect condition without the usual scratches or dings.

The original thick ratcheting bidirectional rotating volcano-shaped elapsed time bezel is tight and clean with sharp, well defined knurling. The original black acrylic inlay shows wear and numerous marks from use-Very Good to Excellent original condition-but all numbers are intact and its once luminous "12" triangle is intact and has acquired a handsome patina.

Diameter 42mm; Lug to Lug 47.5mm; Height 17.5mm., it takes a 20mm strap.