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  • Classic
  • Chronograph

1815 "Homage to Walter Lange"

A. Lange & Söhne 2018

ref. 297.021
Men's

Walter Lange, who passed away in January 2017, took the reins of the family firm in 1990. It was his lifelong wish to revive an invention by his great-grandfather Ferdinand Adolph Lange who, in 1867, conceived of a stoppable jumping seconds hand. This innovation became A. Lange & Söhne's first German patent, registered in 1877 as a "one-second movement with a jumping hand". This mechanism has at last been adapted to a wristwatch: the small seconds hand in the subsidiary dial at 6 o'clock makes six jumps per second, matching the frequency of the balance (21,600 vph). The sweep seconds hand, in contrast, makes one jump between seconds, thanks to a star combined with a tensioned lever arm or flirt. It can be stopped and restarted as required, to take someone's pulse for example, by a pusher at 2 o'clock. Also proposed in white gold or in pink gold, a "pièce unique" in steel was sold at auction for charity.


Function

  • Function
    Hours, Minutes, Small seconds

Complications

  • Display
    Stop function via the crown
    Deadbeat seconds or independent seconds

Movement

  • Movement name
    L1924
  • Energy supply
    Manual-winding
  • N° of components
    253
  • N° of jewels
    36
  • Power reserve
    60 hours
  • Vibrations
    21600
  • Form
    Round
  • Height/thickness
    6.10 mm
  • Diameter
    31.60 mm

Case

  • Form
    Round
  • Material
    Yellow gold
  • Height/thickness
    10.70 mm
  • Diameter
    40.50 mm
  • Back
    Sapphire

Dial

  • Material
    Silver
  • Colour
    Argenté

Strap

  • Material
    Alligator
  • Colour
    Brown
  • Fastening
    Pin buckle

Characteristics

  • Limited/numbered edition
    27