Germany’s A. Lange & Söhne, a favorite among knowledgeable watch connoisseurs, has announced it will be joining the eclectic lineup of exhibiting brands at WatchTime New York on October 14-15. (Tickets and details here.) Among the new pieces it will be highlighting at the event is the Saxonia Moon Phase, a model that features the Glashütte-based brand’s 16th in-house moon-phase caliber.
The A. Lange & Söhne Saxonia Moon Phase, which has a 40-mm-diameter case in either white gold (above) or rose gold (below), combines two complications that appeal to fans of Lange watches: an ultra-precise moon-phase indication (in the subdial at 6 o’clock, which also hosts the small seconds) and the brand’s now-famous “outsize date,” directly above it at 12 o’clock. The Lange outsize date — which has been used in Lange watches since the very first modern models, including the Saxonia, debuted in 1994 — is notable for its gold-framed double aperture and its space-saving configuration with two separate display disks for the units and tens.
The moon-phase display is connected to the movement’s hour-wheel continuum and thus remains in constant motion, like the moon itself, so long as the watch is running. The moving moon-phase disk is made of solid gold that has been given an intense blue hue by a patented coating process and is dotted by an astounding 852 laser-cut stars. Owing to its precisely calculated seven-stage transmission, it reproduces the period of new moon to new moon with 99.998 percent accuracy; assuming the watch runs continuously, the moon-phase display will require a manual correction of only one day every 122.6 years.
Lange’s manufacture Caliber L086.5, which powers the timekeeping, date, and moon-phase functions, is visible through the clear sapphire caseback. The self-winding movement carries a 72-hour power reserve in a single mainspring barrel and features a large central rotor with a centrifugal mass made of platinum. As in all Lange movements, hallmarks of traditional Saxon watchmaking abound, including a three-quarter mainplate made of untreated German silver; a decorative, hand-engraved balance cock; a shock resistant screw balance and free-sprung balance spring; and a host of lavish finishes, such as Glashütte striping and perlage on the plates and bridges.