A. Lange and Sohne 115.031 Grand Lange 1 18K Rose Gold Black Dial (31187)

31187 A. Lange & Sohne 115.031 Grand Lange 1, 115031, 18k rose gold on an alligator strap with a rose gold tang buckle, manual wind A. Lange & Sohne caliber L901.2 movement, 72 hour power reserve indicator, small seconds, patented big date, black dial with overlapping charcoal subdials, applied gold roman numerals, rose gold hands, sapphire crystal, water resistant, diameter 41.9mm, thickness 9.9mm, Like New with original box and papers dated July 2006, and service receipt. The watch was completely serviced by A. Lange & Sohne in January 2017.


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More about A. Lange and Sohne 115.031 Grand Lange 1 18K Rose Gold Black Dial

This is an 18k rose gold A. Lange & Sohne Grand Lange 1 115.031. It has an alligator strap with an A.L.S. rose gold double deployment buckle, and a scratch resistant sapphire crystal. It has a pull out winding crown, a rectangular date corrector on the left-side case band at the 10 o'clock position, an exhibition sapphire display case back secured with 6 screws, and engraved around the polished perimeter is "A.LANGE & SOHNE – GLASHUTTE S.A.," a serial number, and hallmarks. The 41.9mm diameter solid three-body case, curved lugs, and angled bezel are polished. The dial is black with overlapping dials, including an offset charcoal grey time dial centered at 9 o'clock, with applied gold Roman numeral and faceted gold diamond indices. It has faceted gold alpha hands, and there is a perimeter white railway-style minute scale. The large grey subsidiary running small seconds dial is at five-o'clock. There is an up/down 72-hour power reserve arc between 1 and 3 o'clock, with a gold indicator hand. There is a large gold-rimmed double date aperture window at 1 o'clock. It's water resistant to 50 meters/165 feet, and the 9.9mm thick case, dial, and movement are all signed.

This A. Lange & Sohne Grand Lange 1 115.031 has a mechanical manual winding A. Lange & Sohne caliber L901.2 movement. It's constructed from Glashütte 3/4 plate in German silver, with fausses cotes and cotes de Geneve embellishment. It's made with 53 jewels with 9 in screwed gold chatons, 365 components, twin mainspring barrels mounted in series, a shock absorber device, blued screws, and a straight-line lever escapement. It includes a monometallic balance that's adjusted to 5 positions, a swan neck micrometer regulator, a hand engraved balance bridge, and a self-compensating flat balance spring. The mechanism oscillates at a frequency of 21,600 vph (3 Hz).

The A. Lange & Sohne Grand Lange 1 115.031 was introduced in 2010.