A. LANGE & SÖHNE. A VERY FINE AND RARE PLATINUM WRISTWATCH WITH 31 DAY POWER RESERVE, REVOLUTIONARY KEY WINDING MECHANISM, DATE AND HACK FEATURE
Lot 2612

A. LANGE & SÖHNE. A VERY FINE AND RARE PLATINUM WRISTWATCH WITH 31 DAY POWER RESERVE, REVOLUTIONARY KEY WINDING MECHANISM, DATE AND HACK FEATURE

SIGNED A. LANGE & SÖHNE, MONATS-WERK, GLASHÜTTE I/SA, LANGE 31 MODEL, REF. 130.025, MOVEMENT NO. 80'045, CASE NO. 179'861, CIRCA 2012

Closed30 May 2016

Price Realised

HKD 625,000

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A. LANGE & SÖHNE. A VERY FINE AND RARE PLATINUM WRISTWATCH WITH 31 DAY POWER RESERVE, REVOLUTIONARY KEY WINDING MECHANISM, DATE AND HACK FEATURE
SIGNED A. LANGE & SÖHNE, MONATS-WERK, GLASHÜTTE I/SA, LANGE 31 MODEL, REF. 130.025, MOVEMENT NO. 80'045, CASE NO. 179'861, CIRCA 2012
Cal. L034.1 mechanical movement, 62 jewels, silvered dial, applied baton numerals, sector for 31 day power reserve, large double apertures for date, subsidiary seconds, heavy circular case, button in the band for date adjustment, glazed display back secured by six screws with aperture for key winding mechanism for 31 day power reserve, platinum A. Lange & Söhne deployant clasp, case, dial and movement signed
46 mm. diam.
US$65,000-90,000

Specialist note

The revolutionary Lange 31 is the first mechanical wristwatch with a power reserve of 31 days. The exceptionally high power reserve can assure high rate stability and consistent rate accuracy for an entire month. The watch features a key winding mechanism of historic pocket watches and can be wound with a stainless steel winding key through an aperture to the case back. This particular winding mechanism generates much more torque than would be possible with a crown. In order to prevent over tightening of the springs, this complex movement features a built-in torque limiting mechanism and a backstop ratchet that slows down the key when it is turned anti-clockwise.

The Lange 31 attests to the fine craftsmanship, technical excellence as well as aesthetic qualities at A. Lange & Söhne, making it a highly sought-after collector's watch.