A. Lange & Söhne releases platinum Datograph Perpetual limited to 50 pieces
The Saxony watchmaker has updated its most technically demanding timepiece with baguette-cut diamonds and a 556-part calibre combining chronograph and perpetual calendar functions.
A. Lange & Söhne has introduced a new version of the Datograph Perpetual, in 950 platinum with baguette-cut diamond hour markers and a matching five-row bracelet. The manufacture will produce only 50 examples, according to its announcement today.
The original Datograph Perpetual debuted two decades ago as the first A. Lange & Söhne wristwatch to combine a chronograph with a perpetual calendar and an outsize date. The new platinum iteration features those same core complications paired with precious materials and hand finishing.
Dual Mechanisms Across Different Timescales
The chronograph relies on a column-wheel transmission to control its functions. A jumping minute counter delivers instantaneous readings, and a flyback pusher allows the wearer to stop an ongoing measurement and start a new one without first resetting to zero. It measures time in increments of one-fifth of a second.
The perpetual calendar operates according to entirely different principles. Its mechanism is programmed to display the date, day of week and month correctly across decades while automatically accounting for leap years. The moon-phase display will deviate from a true lunation by only one day after 122.6 years of continuous running. According to the manufacturer, a single pusher at 10 o’clock advances all calendar indications and the moon phase together, while separate correctors allow individual adjustment of each function.
Dial Geometry and Diamond Accents
The black dial arranges its complications in a geometric configuration. The framed twin aperture at 12 o’clock displays the outsize date, forming the apex of an equilateral triangle. Below the horizontal centre line sit auxiliary subdials: small seconds and the day-of-week indicator at 9 o’clock; the month and leap-year display alongside the jumping minute counter at 3 o’clock; and the moon-phase display at 6 o’clock. Eleven baguette-cut diamonds, totalling approximately 0.13 carats, serve as hour markers, with a pair marking 12 o’clock. The markers are omitted at 4 and 8 o’clock to create space for the repositioned subdials.
Movement and Materials
The manually wound L952.1 calibre comprises 556 individual parts, of which 223 form the calendar mechanism alone. Each movement is assembled twice and finished by hand, according to the manufacturer. The platinum case measures 41.0 millimetres in diameter and 13.5 millimetres in height. The material is chosen for its robustness, cool tone, high density and resilience. The five-row bracelet integrates polished and matted surfaces with lateral chamfering of the links to showcase the properties of the platinum.
Technical Harmonisation
Combining a chronograph and a perpetual calendar in a single movement presents significant engineering challenges. The column wheel that controls the chronograph mechanism must coordinate with the calendar functions while accommodating the outsize date display. The special dial design necessitates lengthier switching levers to ensure the date mechanism has sufficient space and the extended paths to the repositioned auxiliary dials are accounted for. The manufacture notes that the feat requires
This article was compiled by the CityLifeBytes editorial desk from the official announcements and reporting listed under Sources.
