A mahogany and brass cased Patek Philippe NaviQuartz III Clock. Circa 1975. 160 x 125 x 72 mm. White Roman numeral dial with breguet style hands, set into a brass insert, with power check and indicator. Quartz battery powered movement. Engraved plaque 'To F.B. 1 Marz 1975'. Dial signed. Made for keeping yachts log book records, former Patek brand presidents Henri Stern and his son Philippe were very much into nautical sports, and specifically sailing. Henri Stern had a fervent passion for the nautical angle of the Naviquartz. In fact, he had his very own Naviquartz ' a Naviquartz III ' presented to him on May 1 1974, which the brand featured in an advertisement in the 1970s. That very clock is said to still be within the family today and is the identical model (Patek Philippe is currently run by Philippe's son, Thierry).