Lot 638

A. Lange & Söhne, Glashütte i/SA, "1815 RATTRAPANTE PERPETUAL CALENDAR", Movement No. 109347, Case No. 222249, Ref. 421.025FE, Cal. L101.1, 41,9 mm, circa 2016
An extremely rare Glashuette wristwatch in mint condition, with split seconds chronograph and perpetual calendar with indications of date, weekdays, months, moon phases, leap year and power reserve. The movement is also fitted with hand-engraved bridges and cocks. With original box, Lange-booklet, Lange-guarantee seal dated April 18, 2016, operating instructions and setting pin
Case: platinum, sapphire glass screwed on back, Lange platinum deployant clasp. Dial: solid silver, argenté, solid gold winding crown.
The 1815 RATTRAPANTE PERPETUAL CALENDAR unites two refined classic complications in a wristwatch: a rattrapante-chronograph and a perpetual calendar with a moon-phase display. When they designed these functions, Lange’s masters prioritised the use of traditional solutions that challenge the watchmaker’s abilities to the extremes. In this movement with a total of 631 individual parts, the process of adjusting all switching sequences and thus of assuring optimised rate accuracy is a particularly challenging task. The perpetual calendar mechanism alone consists of 211 parts, and another 206 components constitute the rattrapante-chronograph mechanism. In the L101.1 manufacture calibre, high rate accuracy is guaranteed by a screw balance which is powered by a balance spring developed and crafted in-house. The 1815 RATTRAPANTE PERPETUAL CALENDAR was introduced in 2013. The dial is crafted from solid silver, the moon disk is made of solid gold. The hands are made of rhodiumed gold, blued steel and gold-plated steel.
Source: www.alange-soehne.com