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A. Lange & Söhne - Lange 1 Moon Phase

A. Lange & Söhne Lange 1 Moon Phase

Launched in 2002, the Lange 1 Moon Phase now houses a new movement and features a more realistic moon-phase display.

Launched in 2002, the Lange 1 Moon Phase now houses a new movement and features a more realistic moon-phase display.
The moon-phase display of the Lange 1 Moon Phase tracks the lunar cycle with an average duration of 29 days, 12 hours, 44 minutes and 3 seconds. It is so accurate that it takes 122.6 years to deviate from the true synodic period by just one day.

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. During the day, the disc shows a bright sky, while at night, it depicts a dark sky with prominently contrasting laser-cut stars. Thus, the moon always orbits against a realistic back-ground that doubles as a day/night indicator when setting the watch.


The now 20th Lange Calibre L121.3 is based on the Lang 1 movement introduced two years ago, and it has the same performance attributes: the characteristic twin mainspring barrel with a power reserve of 72 hours, the jumping outsize date display, the escapement with a cam-poised balance and a free-sprung Lange hairspring. Suspended beneath the hand-engraved balance cock, it beats at 21,600 semi-oscillations per hour.
The 70 parts for the moon-phase display were so cleverly integrated in the L121.3 calibre that it is only marginally larger than the calibre L121.1 inside the Lange 1.


The Lange 1 Moon Phase is available in a choice of three 38,5 mm combinations: white gold and black dial, pink gold and argenté dial, and platinum and rhodié dial. The watches are fitted with a black or red brown hand-stitched alligator leather strap, secured with a prong buckle.

A-Lange-Sohne-Lange1-Moon-Phase-trio Prices: €39,500 for the gold models and €52,000 for the platinum model.

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