A. Lange and Sohne 101.030 Lange 1 Grey Slate Dial White Gold (31728)

31728 A. Lange & Sohne 101.030 Lange 1, 101030, very rare with slate grey dial, 18k white gold on a strap with an 18K white gold tang buckle, manual wind caliber L901.2, 72-hour power reserve, slate grey dial with white gold alpha hands and applied hour markers, date, small seconds, power reserve indicator, applied roman numerals, water resistant, diameter: 38.5, thickness: 9.9mm. Like New with original box, hang tag, and papers dated January of 2005.

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More about A. Lange and Sohne 101.030 Lange 1 Grey Slate Dial White Gold

This is an 18K white gold A. Lange & Sohne Lange 1 101.030. It has an alligator leather strap with an 18K white gold buckle, and a scratch-resistant sapphire crystal. It has a signed screw down winding crown, and an exhibition sapphire display case back that's secured with six screws, and engraved with "A.LANGE & SOHNE – GLASHUTTE SA.," hallmarks and serial numbers. The solid, three-body 38.5mm diameter case, curved lugs, and convex bezel are polished. The dial is rare slate grey with an off-centered time dial at 9 o'clock that has applied white gold Roman numerals at the quarter hours, a luminous white minute perimeter scale, white gold alpha hands, and diamond-shaped hour index markers. There is a subsidiary dial at 5 o'clock with luminous white markers and a white gold indicator hand. There is a patented big date double aperture window at 2 o'clock, and an up/down 3-day power reserve indicator is on the perimeter from 2 to 4 o'clock. It has a rectangular quick date reset button on the left-side case band at 10 o’clock. It's water resistant to 30meters (100 feet), it has a power reserve of 72-hours at full winding, and the 9.9mm thick case, dial and movement are all signed.

The mechanical manual winding A. Lange & Sohne Lange caliber L901.0 movement is Glashütte 3/4 plate, with Cotes de Geneve embellishment. It's constructed with 53 jewels, and 9 screwed-in mounted gold châtons. It has twin spring barrels, an anti-shock device, heat-blued screws, a straight-line lever escapement, and a monometallic balance that's adjusted to 5 positions. It includes the patented fan-shaped balance cock with hand engraving (unique for each watch), and a horseshoe-shaped precision whiplash index adjuster. There is a self-compensating flat balance spring, a hand-engraved balance bridge, and a swan-neck micrometer regulator. The mechanism oscillates at a frequency of 21,600 vph (3 Hz).

This A. Lange & Sohne Lange 1 101.030 is named after Ferdinand Adolph Lange who founded the company in 1845.