Yes, there is an exhibition caseback on this watch, but one look at the dial (or lack thereof) and you’ll understand the complexity of the new manually-wound 686-component caliber L.U.C 08.03-L. The depth of the front is something to behold, with the warmth of bridges and plates in German silver showing through. While it might seem overwhelming at times — admittedly, legibility doesn’t seem to be a priority with this endeavour — the architecture of the movement still ensures that all the necessary information is displayed. Below twelve o’clock, the aperture of a small disc reveals the current sonnerie mode (via “P” for petite, “G” for grande, and “S” for silent), while to its right sit the power reserve indicators. There are two, for each of the caliber’s mainspring barrels — one for the timekeeping functions and one for the chiming complications. The movement is rated to 70 hours of runtime, while the grande sonnerie mode is rated to a minimum of 12 hours. On the indicators, a handstack with two polished and faceted hands shows the level of each barrel and if it’s time for you to wind the watch.