A. Lange & Söhne Richard Lange Tourbillon “Pour le Mérite”, Boutique Edition in White Gold Case and Silver Argenté Dial with Blued Hands

The RICHARD LANGE TOURBILLON“Pour le Mérite” is an extra ordinary horological complication watch that unites A. Lange & Söhne’s unique fusée-and-chain transmission and a one-minute tourbillon with a patented stop-seconds mechanism. Now, this timepiece is being introduced in a white-gold version with blued steel hands and blue minutes scale markers. This exclusive special model is available only at A. Lange & Söhne boutiques.

Since the presentation of its first new-era watch collection 20 years ago, A. Lange & Söhne has introduced four extraordinary complications with the distinctive “Pour le Mérite” hallmark. What they all have in common is the fusée-and-chain transmission that Lange perfected for the wristwatch format. It assures that the movement is powered by a constant torque throughout its entire power-reserve period.

Additionally, the RICHARD LANGE TOURBILLON “Pour le Mérite” features a one-minute tourbillon for best rate stability. Its stop-seconds mechanism makes it possible to instantaneously block the balance inside the tourbillon cage and thus stop the movement simply by pulling the crown. This allows the watch to be set to one-second accuracy.

Additionally, the RICHARD LANGE TOURBILLON “Pour le Mérite” is endowed with an innovative and also patented pivoting dial segment: from 6 to 12 o’clock, a small auxiliary dial fills the gap in the hour circle, which at all other times exposes the fascinating tourbillon.

The regulator dial of the RICHARD LANGE TOURBILLON “Pour le Mérite” shows the time indications with separate displays. The large upper minute circle and the smaller subsidiary dials for the hours and seconds are centred in the corners of an isosceles triangle. This layout was inspired by Chronometer No. 93 crafted by Dresden watchmaker Johann Heinrich Seyffert (1751–1818). In the late 18th century, he ranked among the pioneers of precision watchmaking in Saxony. Alexander von Humboldt, the famous German natural scientist, was one of the individuals who held Seyffert’s timekeeping instruments in high esteem and relied on their remarkable rate accuracy during his expeditions.

The special edition of the RICHARD LANGE TOURBILLON “Pour le Mérite” is now being presented with a noble white-gold case. The high-contrast time display with blued-steel hands and blue hour markers in the minute circle assures excellent legibility on the argenté-coloured solid-silver dial as the background. The exclusive timepiece is available only in A. Lange & Söhne boutiques, including those in New York and Moscow that opened in 2014.

Lange manufacture calibre L072.1

Technical details
Model: RICHARD LANGE TOURBILLON “Pour le Mérite”
Ref. 760.026F

Movement 
Lange manufacture calibre L072.1, manually wound, fusée-and chain transmission; crafted to the most exacting Lange quality standards, decorated and assembled by hand; precision-adjusted in five positions; plates and bridges made of untreated German silver; seconds bridge engraved by hand
Movement parts: 351 (without chain); chain: 636
Jewels: 32, including one diamond end stone
Screwed gold chatons: 3
Escapement: Lever escapement
Oscillator: Shock-resistant screw balance, superior-quality balance spring manufactured in-house, frequency of 21,600 semi-oscillations per hour
Power reserve: 36 hours when fully wound
Functions: Regulator dial with large minute circle; hours with pivoting dial segment; seconds with patented stop-seconds mechanism connected to the tourbillon
Operating elements: Crown for winding the watch and setting the time
Movement dimensions: Diameter: 33.6 millimetres; height: 7.6 millimetres

Case 
White gold
Diameter: 41.9 millimetres; height: 12.2 millimetres
Crystal and back: Sapphire crystal (Mohs hardness 9)

Dial
Solid silver, argenté
Hands: Blued steel

Strap 
Hand-stitched crocodile strap, black
Clasp: Lange deployant buckle in solid white gold

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