The Chronodate, as it was named in 1942, the year of its launch, was the world’s first triple calendar chronograph. It preceded even Rolex’s reference 6036 “Jean Claude Killy” by nine years. It was, at the time of its launch, a work of absolute disruptive modernity. Bear in mind that in the context of the early 1940s, a wristwatch chronograph was already an incredibly modern super machine. The idea that you could harness the power of a stopwatch, an instrument that allowed you to time everything, from sporting events to auto races, or help you rapidly calculate heart rate in a miniature wristwatch format was already mind-blowing. At the same time, having an indication for day, date and month was the equivalent of having a super computer strapped to your wrist.