A. Lange & Söhne 1815 Rattrapante Perpetual Calendar, Limited to 100 Pieces
A. Lange & Söhne has introduced a new version of their 1815 Rattrapante Perpetual Calendar watch. This timepiece combines the intricate complications of a split-seconds chronograph and a perpetual calendar, housed in an 18-carat white gold case with a pink-gold dial. Limited to just 100 pieces, it joins the existing platinum and pink gold models with an argenté dial.
The rattrapante complication is highly regarded in the world of horology, as it can measure intermediate and comparative times, as well as determine minimum and maximum values within a minute, in addition to traditional chronograph functions. The L101.1 manufacture caliber beats at six semi-oscillations per second, allowing for precise recording of stopped times with an accuracy of one-sixth of a second. The peripheral minute scale provides easy readability of the recorded times.
The perpetual calendar is another remarkable feature of this timepiece. It accurately displays the date, day of the week, and month every day, accounting for leap years until March 1, 2100, when the leap year will be skipped in accordance with the Gregorian calendar. The moon-phase display is also programmed for long-term accuracy, requiring a correction of only one day every 122.6 years to match the synodic orbit of the Earth's satellite.
True to the 1815 collection's vintage aesthetics, A. Lange & Söhne presents these complications in a classic design reminiscent of their pocket watches. The two pairs of calendar indications are positioned at 3 and 9 o'clock, with the left dial showing the date and day of the week, and the right displaying the month and leap year. The moon-phase display adds a colorful accent and shares an auxiliary dial with the subsidiary seconds at 6 o'clock. The minute counter and power-reserve indicator are located at 12 o'clock.
Measuring 41mm in diameter, the manually wound movement L101.1 powers the 1815 Rattrapante Perpetual Calendar. With an impressive total of 631 individual parts, including 211 components dedicated to the perpetual calendar and 206 for the rattrapante-chronograph mechanism, this timepiece showcases the brand's meticulous craftsmanship. Notable details visible through the sapphire-crystal case back include screwed gold chatons, blued screws, a hand-engraved balance cock, and an elaborate whiplash precision index adjuster.
The chronograph mechanism employs the classic two-column wheel transmission, exhibiting both technical complexity and exceptional artisanship. The movement's surfaces feature straight graining, and the chamfers are skillfully polished to perfection. A. Lange & Söhne's commitment to exceptional quality and attention to detail is evident in every aspect of this watch.
Photo credit: A. Lange & Söhne
The rattrapante complication is highly regarded in the world of horology, as it can measure intermediate and comparative times, as well as determine minimum and maximum values within a minute, in addition to traditional chronograph functions. The L101.1 manufacture caliber beats at six semi-oscillations per second, allowing for precise recording of stopped times with an accuracy of one-sixth of a second. The peripheral minute scale provides easy readability of the recorded times.
The perpetual calendar is another remarkable feature of this timepiece. It accurately displays the date, day of the week, and month every day, accounting for leap years until March 1, 2100, when the leap year will be skipped in accordance with the Gregorian calendar. The moon-phase display is also programmed for long-term accuracy, requiring a correction of only one day every 122.6 years to match the synodic orbit of the Earth's satellite.
True to the 1815 collection's vintage aesthetics, A. Lange & Söhne presents these complications in a classic design reminiscent of their pocket watches. The two pairs of calendar indications are positioned at 3 and 9 o'clock, with the left dial showing the date and day of the week, and the right displaying the month and leap year. The moon-phase display adds a colorful accent and shares an auxiliary dial with the subsidiary seconds at 6 o'clock. The minute counter and power-reserve indicator are located at 12 o'clock.
Measuring 41mm in diameter, the manually wound movement L101.1 powers the 1815 Rattrapante Perpetual Calendar. With an impressive total of 631 individual parts, including 211 components dedicated to the perpetual calendar and 206 for the rattrapante-chronograph mechanism, this timepiece showcases the brand's meticulous craftsmanship. Notable details visible through the sapphire-crystal case back include screwed gold chatons, blued screws, a hand-engraved balance cock, and an elaborate whiplash precision index adjuster.
The chronograph mechanism employs the classic two-column wheel transmission, exhibiting both technical complexity and exceptional artisanship. The movement's surfaces feature straight graining, and the chamfers are skillfully polished to perfection. A. Lange & Söhne's commitment to exceptional quality and attention to detail is evident in every aspect of this watch.
Photo credit: A. Lange & Söhne
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