GPHG 2013

A.Lange & Söhne's timepiece will be competing in the Grande Complication category.
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This timepiece features a rattrapante chronograph, a perpetual calendar, a moon-phase display, and a power-reserve indicator.

 

 

The 1815 Rattrapante Perpetual Calendar joins the top league of chronographs, the so-called rattrapante or split-seconds chronographs. Its push piece at the 10 o’clock position implies that there is more than meets the eye. The mechanism behind it is visible through the sapphire-crystal caseback.

Stopping elapsed or lap times is handled in the classic manner with two column wheels. The central, superposed chronograph hand and rattrapante hand make it possible to measure any number of lap times within the course of a minute. The minute-counter and power-reserve displays are located at 12 o’clock. The longer blued-steel hand indicates the count of stopped seconds. Conversely, the shorter golden hand in the inner circle tells the owner of the watch when the time has come to replenish the energy of the mainspring via the winding crown.

 

 

Of the 636 individual parts of the newly developed manufacture calibre L101.1, more than 200 components are part of the perpetual calendar mechanism. The paired calendar indications are positioned at 9 and 3 o’clock. The subsidiary dial on the left indicates the date and the day of the week, the one on the right the month and the leap year. The  solid-gold lunar disc beneath the subsidiary seconds dial at 6 o’clock emulates the synodic lunation so precisely that it only needs to be corrected by one day every 122 years.

The prize-giving ceremony will be held at the Grand Théâtre de Genève on November 15, 2013.