One of the most beautiful watches to come out of Baselworld 2013 is surely this strikingly elegant complication pictured above. Arnold & Son’s HM Perpetual Moon features a hand sculpted 11.2 mm moon sub-dial in slight three-dimensional relief that moves to mimic the phase of the moon on any given day. Amazingly, it only deviates once every 122 years; a simple push of a button resets the cycle again for another 122 years.
In addition to the handsome 42 mm dial, there's a secondary moon phase on the back with a pointer hand indicating the place in the lunar cycle.
The HM Perpetual Moon is powered by Arnold & Son’s hand-wound 27-jewel Caliber A&S1512, which is good for 80 hours power reserve.
The watch is available in different combinations of stainless steel or rose gold case, as well as a choice of dials.