1815 UP/DOWN | A. Lange & Söhne
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1815 UP/DOWN

Power-reserve indicator “by means of a hand”

Just like the UP/DOWN power-reserve indicator, the blued hands, the recessed central segment, the Arabic numerals and the railway-track minute scale were inspired by historic pocket watches. A top-mounted wheel train on the caseback side of the movement and two additional screwed gold chatons are manifestations of the mainspring barrel that was enlarged in comparison with the 1815 and delivers power for three days.

The name of the 1815 UP/DOWN timepiece in white gold refers to the Lange-typical UP/DOWN power-reserve indicator.
The 1815 UP/DOWN timepiece in white gold features blued hands and a railway-track minute scale.

Patent No. 9349 was granted to A. Lange & Söhne on 18 May 1879. The subject was a “device in pocket watches for recognising whether the watch is wound or unwound and for indicating how much time remains before it reaches the totally unwound state.” This was the official moment of birth of Lange’s characteristic UP/DOWN power-reserve indicator. The name suffix of the 1815 UP/DOWN makes this clear.

Anthonie de Haas on the 1815 UP/DOWN (English)

Movement L051.2

Number of parts

245

Number of rubies

29

Number of chatons

7

Power reserve

72 hours when fully wound

Oscillator

Frequency: 21600 semi-oscillations per hour

Beat-adjustment system: Screw balance

Movement measures

Diameter: 30.6 mm; height: 4.6 mm

Movement Movement
Movement Movement