A. Lange & Söhne 1815 Up/Down

The sublimely perfect 1815 Up/Down watch with a power-reserve indicator reflects the A. Lange & Söhne style in its purest form. Its three-day movement is paired with a power-reserve mechanism. An additional blued-steel hand at 8 o’clock indicates how long the watch will continue to run before having to be rewound.

A. Lange & Söhne 1815 Up-Down Pink Gold Reference 234.032

The display with AUF for the fully wound and AB for the fully unwound movement is a traditional A. Lange & Söhne characteristic that dates back to a patent granted in 1879.

A. Lange & Söhne 1815 Up-Down Pink Gold Reference 234.032

The principle employed in the 1815 Up/Down also relies on a patent filed by Otto Lange, one of the grandsons of the manufactory’s founder. His invention was specially conceived for slender watches: a planetary gear system integrated in the movement drives the display without requiring extra vertical space. Lange adopted the same approach for the power-reserve indicator of the 1815 Up/Down.

A. Lange & Söhne 1815 Up-Down Pink Gold Reference 234.032
A. Lange & Söhne 1815 Up-Down Pink Gold Reference 234.032

On the plate side, two additional gold chatons in the three-quarter plate made of German silver refer to the presence of the power-reserve mechanism.

A. Lange & Söhne 1815 Up-Down Pink Gold Reference 234.032
A. Lange & Söhne 1815 Up/Down Pink Gold Reference 234.032

Despite the supplementary 57 parts, the L051.2 manufacture movement has exactly the same dimensions as that of the 1815 without the Up/Down indicator: a height of 4.6 millimetres and a diameter of 30.6 millimetres.

A. Lange & Söhne 1815 Up-Down Movement Calibre L051.2

Beneath the hand-engraved balance cock, a classic screw balance and an indexless oscillator assure optimised rate accuracy together with a balance spring developed and manufactured in-house, which is calibrated to a frequency of 21,600 semi-oscillations per hour.

A. Lange & Söhne 1815 Up-Down Movement Calibre L051.2

With its 245 parts lavishly finished by hand, manufacture calibre L051.2 features a host of hallmarks that underscore Lange’s watchmaking artistry: they include chamfered and polished edges, Glashütte ribbing on the three-quarter plate, gold chatons secured with blued screws, the polished endpiece of the escape-wheel cock, and winder wheels decorated with solarisation that are visibly integrated in the plate.

A. Lange & Söhne 1815 Up-Down watch yellow gold version Reference 234.021
A. Lange & Söhne 1815 Up/Down Yellow Gold Reference 234.021

The case and prong buckle of the 1815 Up/Down are crafted from 18-carat yellow, white, or pink gold. All model variations have an argenté dial made of solid silver. Superb legibility is guaranteed thanks to black numerals and blued-steel hands.

A. Lange & Söhne 1815 Up-Down White gold Reference 234.026
A. Lange & Söhne 1815 Up/Down White Gold Reference 234.026

With a railway-track minute scale, Arabic numerals, and symmetrically arranged subsidiary dials for the power-reserve indicator and the small seconds, the 1815 Up/Down pays tribute to the style elements of Lange’s acclaimed pocket watches.

Technical details

Model: A. Lange & Söhne 1815 Up/Down

Versions
Reference 234.021: Yellow gold case with solid silver argenté dial and middle-brown crocodile strap
Reference 234.026: White gold case with solid silver argenté dial and black crocodile strap
Reference 234.032: Pink gold case with solid silver argenté dial and reddish-brown crocodile strap

Movement
Lange manufacture calibre L051.2, manually wound, 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; balance cock engraved by hand
Movement parts: 245
Jewels: 29
Screwed gold chatons: 7
Escapement: Lever escapement
Oscillator: Shock-resistant screw balance, superior-quality balance spring manufactured in-house, frequency 21,600 semi-oscillations per hour, precision beat adjustment system with lateral setscrew and whiplash spring
Power reserve: 72 hours when fully wound

Functions
Time indicated in hours, minutes, and subsidiary seconds with stop seconds; power-reserve indicator
Operating elements: Crown for winding the watch and setting the time

Movement dimensions
Diameter: 30.6 millimetres; height: 4.6 millimetres

Case
Yellow gold/ White gold/ Pink gold
Diameter: 39.0 mm
Height: 8.9 mm
Crystal and case-back: Sapphire crystal (hardness 9)

Dial
Solid silver, argenté dial with blued steel hands

Strap
Hand-stitched crocodile strap, Prong buckle in gold

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