Pre SIHH 2017: Nuovo A. Lange & Söhne Lange 1 Moon Phase

The arrangement of the display is based on a new, particularly realistic concept. A separate solid-gold moon pursues its orbit in the foreground. Behind it, a celestial disc – also made of solid gold – performs exactly one revolution every 24 hours. On the disc, the different times of day are represented by varying blue hues caused by interference effects. During the day, it shows a bright sky without stars, while at night it depicts a dark sky with prominently contrasting laser-cut stars. Thus, the moon always orbits against a realistic background that doubles as a day/night indicator when setting the watch.

The now 20th Lange calibre with a moon-phase display is based on the Lange 1 movement introduced two years ago, and it has the same performance attributes. This includes the characteristic twin mainspring barrel with a maximum power reserve of 72 hours and the precisely jumping outsize date display. The Lange 1 Moon Phase also features an escapement with a cam-poised balance and a free-sprung Lange hairspring. Suspended beneath the hand-engraved balance cock, it beats with a frequency of 21,600 semi-oscillations per hour.

The 70 parts for the moon-phase display were so cleverly integrated in the L121.3 manufacture calibre that it is only marginally larger than the calibre L121.1 inside the Lange 1. The asymmetric solid-silver dial sets a remarkably harmonious stage for the luminous time and power-reserve indications complemented with an outsize date, the moon-phase display, and the day/night indicator. The Lange 1 Moon Phase is available in white gold/black, pink gold/argenté, and platinum/rhodié case/dial combinations.