A. Lange and Sohne 1815 Flyback Chronograph 401.026 Silver Dial 18K White Gold FIRST SERIES

More about 1815 Flyback Chronograph 401.026 Silver Dial 18K White Gold FIRST SERIES

This is an 18K white gold A. Lange & Sohne 1815 Chronograph Fly Back 401.026. It has an alligator leather strap with a signed 18K white gold deployant buckle, and scratch resistant sapphire crystals. There is a signed pull out winding crown, arched rectangular chronograph push buttons, and an exhibition sapphire display case back secured with 6 screws and engraved with "A. LANGE & SOHNE – GLASHUTTE 1.SA.," and hallmarks. The 39.5mm diameter round solid 3-body case, curved lugs, and convex bezel, are polished/brushed. The dial is silver with a recessed central circle, and Arabic numeral hour markers surrounded by a black minute/1/5 second scale with black pip hour indices. It includes blued steel alpha sword hour and minute hands, a center sweep blued steel chronograph seconds hand with an open worked diamond-shaped counterbalance, and a black Arabic numeral perimeter pulsometer scale to 200 pulsations on a raised tier rehaut. It has twin recessed silver subsidiary dials with black Arabic numerals and railway-style tracks, and blued steel indicator hands, including a center sweep small running constant seconds register between 7 and 9 o'clock, and there is an instantaneous fly back 30-minute chronograph totalizer between 3 and 5 o'clock. It's water resistant to 30 meters/100 feet, it has a 36-hour power reserve at full winding, and the 11mm thick case, dial, and movement are all signed. This A. Lange & Sohne 1815 Chronograph 401.026 has a mechanical manual winding A. Lange & Sohne caliber L 951 (based on the ALS caliber 951.1) fly back column wheel chronograph movement that's Glashütte ¾-plate with gold fausses cotes embellishment. It's constructed with 34 jewels (including 4 in screw-mounted gold châtons), 320 components, blued screws, and a shock absorber system. It has a monometallic balance that's adjusted to 5 positions, and a self-compensating Breguet balance spring. There is a swan-neck micrometer regulator, and a hand-engraved balance bridge. The mechanism oscillates at a frequency of 18,000 vph (2.5Hz The A. Lange & Sohne 1815 Chronograph 401.026 was introduced in 2004 and it was produced until 2008. The 1815 in the model name refers to the birth year of Ferdinand Adolph Lange, the founder of the company.

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