here have been a handful of master watchmakers who have created some kickass cool complications, either based on readily available movements or with in-house base movements. Kurt Klaus used a module on top of the Valjoux 7750 to create the IWC Da Vinci perpetual calendar, with all the adjustments made through the crown. Paul Gerber designed the movement with alarm function for the world’s first automatic Fortis chronograph, and later developed the triple rotor under his own brand. Then there was Ludwig Oechslin’s calendar complication based on the Valjoux 7750 for the MIH watch (named for the Musée International d’Horlogerie that Oechslin was both curator and director of). Also, not to forget, the work of Jean-Marc
