Dial case and movement signed. DIAM. 42 mm. THICKNESS 17 mm. Property of the Original Owner Launched in 1965 as a successor to the MEMOVOX DEEPSEA the POLARIS was JAEGER LECOULTREs response to the ever-increasing popularity of recreational scuba diving. Developed for the American market and designed in a massive 42 mm.case it featured an internal revolving bezel as well as an alarm function and a date. Equipped with the Jaeger caliber K825 that revolutionized the watch world a few years before as the worlds first automatic alarm watch the Polaris offered divers reliability and endurance. The first generation was fitted with a plain full back and a dial with applied baton indexes the second generation of 1968-70 were drilled for better sound emission and a dial with large luminous indexes. The total production of the Polaris model is believed to be fewer than 1714 units manufactured between 1965 and 1970.