For Baselworld 2017, Arnold & Son unveiled yet another masterfully skeletonized watch which conveys the brand’s conceptual DNA forward. The Arnold & Son DBG Skeleton is the newest addition to the DBG (Double-Balance GMT) collection which we reviewed the original, non-skeletonized version of in larger detail here back in 2013. For those unfamiliar with this piece, it’s essentially two movements which share a winding platform, housed in one watch. Skeletonized, this watch looks incredible and is the best illustration of Arnold & Son’s relentless progress.First, a tiny bit more about Arnold & Son’s DBG system. Every time display is powered by its own barrel, with its own equipment train, escapement, and balance, while sharing one winding system. Even though this isn’t necessarily unprecedented, because of the offsets of the shared components when compared with the individual parts, it’s not always pretty, and rarely skeletonized. But with the DBG Skeleton, we see almost perfect symmetry about the dial along with caseback.The unusual nature of the in-house A&S1309 movement permits for a few added mechanical and practical advantages. For instance, because of the distinct socket, gear train, and escapement/balance, the GMT purpose comprises a “moments” hand instead of the standard 24-hour counter just. Every time zone screen from the Arnold & Son DBG Skeleton can be put to incremental quarters of this hour. So for a few Indian, Australian, and Canadian time zones that are off by half-hours, for instance, the watch may account for this. Additionally, the Equation of Time display at 12 o’clock determines the gap between each screen, in addition to whether it is day or night in the second time zone. The A&S1309 defeats at 21,600bph and features a 40-hour power book.