A. Lange and Sohne 1815 Flyback 414.031 Chronograph Black Dial 18K Rose Gold

More about 1815 Flyback 414.031 Chronograph Black Dial 18K Rose Gold

This is an 18k rose gold A. Lange & Sohne 1815 Chronograph 414.031. It has an alligator leather strap with a rose gold signed tang buckle and scratch resistant sapphire crystals (domed over the dial) with anti-reflective coating. It has rounded rectangular flyback chronograph push buttons, a rose gold pull out signed winding crown, and an exhibition sapphire display crystal case back secured with 6 screws that's engraved around the perimeter with "A. LANGE & SOHNE -GLASHUTTE SA," hallmarks and a serial number. The 39mm diameter round solid three-body case, curved lugs, and rounded bezel, are polished/brushed. The dial is black with luminous white painted Arabic numeral hour markers, rose gold Dauphine sword hands, and a rose gold center sweep second hand with a diamond-shaped skeletonized counterbalance. There is a luminous outer railway-style white minute/one-fifth second chronograph scale, and around the perimeter is a white pulsometer scale to 200 BPH. It includes twin black recessed subsidiary dials with white Arabic numerals, railway-style scales, and gold indicator hands, including a small constant running seconds register at 8 o'clock, and a 30-minute chronograph totalizer is at 4 o'clock. It has a 60-hour power reserve at full winding, it's water resistant to 30 meters/100 feet, and the 11mm thick case, dial, and movement are all signed. This A. Lange & Sohne 1815 Chronograph 414.031 has a mechanical manual winding A. Lange & Sohne caliber L 951.5 column wheel fly back chronograph movement. It's made of Glashütte 3/4 plate, with Cotes de Geneve embellishment and hand-engraved balance bridge. It includes a hand-engraved balance cock and whiplash spring and it's constructed with 40 jewels, 405 components, a KIF shock absorber system, and it includes blued screws and 4 in screw-mounted gold châtons. It has a straight-line lever escapement, a jumping minute counter, a vertical clutch, a monometallic balance that's adjusted to 5 positions, and a shock-resistant balance wheel with eccentric poising weights. It includes a self-compensating Breguet balance spring, a swan-neck micrometer regulator, and a precision beat-adjustment system with a lateral setscrew and a whiplash spring. The movement oscillates at a frequency of 21,600 vph (3Hz). The A. Lange & Sohne 1815 414.031 Chronograph was launched in 2017.

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