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The Secret of the Lunar Disc - Moon-phase watches by A. Lange and Sohne
Who could possibly not be fascinated by shimmering moonlight mirrored on the surface of an expanse of water? Or by the unforgettable experience of a total lunar eclipse? “The moon, by her comparative proximity, and the constantly varying appearances produced by her several phases, has always occupied a considerable share of the attention of the inhabitants of the earth.” This is how Jules Verne described the allure of our planet’s closest companion in the heavens. In his book “From the Earth to the Moon”, written in 1865, he had his protagonist Barbicane catapulted to the moon by a gigantic cannon. One hundred years would elapse before the Apollo mission made the dream of landing on the moon come true.
Precision in Detail
A. Lange & Söhne’s watchmakers are fascinated by the earth’s satellite as well. To such a degree, in fact, that they leverage all the potentials of science and technology to emulate its orbit with extreme precision and reproduce its radiance as brilliantly as possible. Since the presentation of the first new collection almost 20 years ago, they have developed no fewer than 15 manufacture calibres with moon-phase displays. One of them is the GRAND LANGE 1 MOON PHASE launched not long ago. As in nearly all A. Lange & Söhne moon-phase watches, a correction by one day is needed only every 122.6 years. This is about 50 times more accurate than conventional displays. The orbital moon-phase display of the new RICHARD LANGE PERPETUAL CALENDAR “Terraluna” establishes a new benchmark: this mechanism is so accurate that it can run for over one thousand years before it deviates from the actual lunar cycle by one day.
Bright Brilliance
The rich blue hue is another special facet of Lange lunar discs. The unique chromatic effect is achieved by superposing light waves. To produce this so-called interference phenomenon, Lange partnered with scientists to develop a patented coating process for the solid-gold discs. The vibrant blue tint forms a remarkably high-contrast backdrop for the laser-cut stars. In the RICHARD LANGE PERPETUAL CALENDAR “Terraluna”, more than two thousand stars in five different sizes accentuate the seductiveness of the nocturnal sky.
Our overview presents all of the timepieces with moon-phase displays in the current collection.
Moon-phase watches by A. Lange & Söhne:


Its technical finesse lies in the particularly accurate, constantly driven and thus captivatingly realistic display of the waxing and waning moon. The Lange outsize date and the asymmetric indications characterise the face of this watch.


Debut model 2014
This recently introduced model focuses on the earth’s companion. The waxing and waning of the moon can be contemplated in rich detail in the centre of the hour and minute circle.


This watch combines two classic complications with the iconic design of A. Lange & Söhne’s most famous model family. Thanks to the lucid arrangement of the calendar displays around the time indication, it presents a host of clearly legible information.


Debut model 2014
The orbital moon-phase display, for which a patent has been registered, is an innovation in the domain of precision watchmaking. With peerless accuracy, it depicts the changing constellation of the moon relative to the earth and the sun.


The annual calendar of this classically elegant watch displays the correct number of days in each month for an entire year. The date must be adjusted only once a year, at the transition from the last day of February to the first day of March.


When it was presented in 2001, this first self-winding wristwatch with a perpetual calendar and an outsize date was a sensation. Its calendar displays can be advanced both individually and collectively.


With its ingenious combination of a flyback chronograph with a perpetual calendar, the DATOGRAPH PERPETUAL is a watch for the moment and for eternity. Its manufacture calibre L952.1 ranks among the Saxon manufactory’s most prestigious developments.


The clearly configured dial of this watch showcases the technical fascination of a split-seconds chronograph and the lasting precision of a perpetual calendar that requires no correction until the year 2100.


In A. Lange & Söhne’s most complicated timepiece, the moon-phase display is one of many technical subtleties. The watch incorporates a chiming mechanism with grand and small strike, a minute repeater, a split-seconds chronograph with a minute counter and flying seconds as well as a perpetual calendar.

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