IWC Da Vinci Chrono Perpetual Calendar with split second chronograph in 18k yellow gold on IWC alligator strap with IWC 18k tang buckle. Auto w/ subseconds, date, day, month, moonphase, chronograph and perpetual calendar. 39 mm case size. Ref 3751. Fine Pre-owned IWC Watch. Sport IWC Da Vinci 3751 watch is made out of yellow gold on a Brown Leather band with a 18k tang buckle. This IWC watch has a 39 x 39 mm case with a round caseback and off-white moon phase dial…