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A. Lange and Sohne Lange 31 130.032 31-Day Power Reserve 18k Rose Gold


A. Lange & Sohne Lange 31 130.032, 130032, 18k rose gold case with a unique rose gold double fold deployant buckle, manual wind A. Lange & Sohne calibre L034.1, the first movement with 31-days power reserve, the double stacked mainsprings are each over 185cm, the constant force escapement allows a continuous draw from the mainspring without loss of accuracy, the accuracy is extremely precise and impressive, "key winding mechanism" is used to wind the watch instead of the traditional winding of the crown, patented big date, 31-day power reserve indicated on the dial, rhodium dial, 18k rose gold markers, display back, size 45.9mm, thickness 15.9mm. Like New with original box, winding key, and papers dated December of 2010.

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More about Lange 31 130.032 31-Day Power Reserve 18k Rose Gold

This is a 18k rose gold A. Lange & Sohne Lange 31 130.032. It has an alligator leather strap with a unique rose gold double fold deployant buckle, and a scratch resistant sapphire crystal. There is a signed winding crown, and an exhibition sapphire display case back secured with 6 screws, and engraved with "A. LANGE & SOHNE – GLASHUTTE," a serial number, and several hallmarks. There is a circular keyhole for the winding key system on the solid part of the case back that's sealed with 3 gaskets insuring water resistance. It is not wound by the crown, but by a winding key that fits into a matching aperture on the case. The key has a built-in torque sensor that knows when the watch is almost fully wound, and it senses the increase in tension and disengages the ratchet key. The 45.9mm diameter solid three-body case, curved lugs, and concave cupped bezel, are polished. The dial is rhodium silver with applied faceted 18k rose gold hour markers, around a perimeter minute scale. It has polished rose gold epee hands, and there is a recessed silver subsidiary running small seconds dial at 6 o'clock. A rose gold-rimmed double-window quick set big date aperture is at 10 o'clock, and it's operated by a rectangular button on the case edge at 10 o'clock. There is a railroad-style scale at 3 o'clock for the 31-day, 744-hour power reserve - the first to last an entire month. It's water resistant to 30 meters/100 feet, and the 15.9mm thick case, dial, and movement are all signed. This A. Lange & Sohne Lange 31 130.032 has a mechanical manual winding Lange caliber L034.1 movement. It's three-quarter plate with Cotes de Geneve ribbing, and it's constructed with 62 jewels including 61 rubies and one transparent sapphire. It has 406 components, blued screws, three screwed gold chatons, a whiplash precision index adjuster on a hand-engraved balance cock, and two stacked mainspring barrels with each accommodating an 1850mm spring (10 times longer than a conventional wristwatch). At full tension the twin barrels store over 3 Joules of energy, and the constant force escapement provides continuous energy from the mainspring without any loss of accuracy. The mechanism oscillates at a frequency of 21,600 vph (3 Hz). The A. Lange & Sohne Lange 31 130.032 was introduced at the SIHH exhibition in 2009.

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