A. Lange and Sohne 233.026 1815 18K White Gold Manual 40MM / Deployment (28719)

28719 A. Lange & Sohne 233.026 1815 40MM, 233026 18k white gold on a strap with an 18k white gold deployant buckle, manual wind A. Lange & Sohne caliber L942.1, power reserve of 55-hours, small seconds at 6 o'clock, sapphire crystal, water resistant to 30 meters, display back, diameter: 40mm, thickness: 8.9mm. Like New with original box and papers dated May 2017.

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More about A. Lange and Sohne 233.026 1815 18K White Gold Manual 40MM / Deployment

This is an 18k white gold A. Lange & Sohne 1815 233.026. It has a leather strap with a matching 18k white gold deployant buckle, and a scratch resistant sapphire crystal. The 40mm diameter solid three-body case, concave bezel, and downturned lugs are polished. There is a transparent display sapphire case back secured with 6 screws. The dial is silver with blued lance hands, painted black Arabic numeral hour markers, and an outer railroad-style minute track. There is a small seconds subsidiary dial at the 6 o'clock position, and stop seconds for accurate time setting. It's water resistant to 30 meters/100 feet, and it has a power reserve of 55-hours. The 8.9mm thick case, dial, and movement are all signed.

This A. Lange & Sohne 1815 233.026 has a mechanical manual winding A. Lange & Sohne caliber L051.1 that's rhodium plated, with fausses cotes embellishment. It's constructed with 23 jewels, 188 components, a shock absorber mechanism, and 5 screwed gold chatons. It includes a straight-line lever escapement, a monometallic balance adjusted to heat, cold, and 5 positions, and a self-compensating flat Nivarox balance spring. The ¾ back plate is finished with striped/ribbed texturing and polished beveIed edges, and the screw balance is shock resistant. It has a swan neck micrometer regulator, and the balance cock is hand-engraved, making each watch unique. The movement oscillates at a frequency of 21,600 vph (3 Hz), and the precision beat-adjustment system has a lateral setscrew and a whiplash spring.

The 1815 watches are an homage to Adolph Lange, the founder and pioneer of precision German watchmaking; they commemorate his birth year of 1815.