A. Lange and Sohne 139.025 Grande Lange 1 Moon Platinum (30772)

30772 A. Lange & Sohne 139.025 Grande Lange 1 Moonphase, 139.025, Introduced in 2014, Platinum on a Strap with a Platinum Tang Buckle, Manual Wind Caliber L095.3, Silver Dial, Large Date at 2 O'Clock, Power Reserve Indicator, Small Seconds, Moonphase within Hour / Minute Dial, Display Back, Sapphire Crystal, Water Resistant to 3 atm, Diameter: 41mm, Thickness: 10.4mm, like new with Original Box and Papers dated 6/20/2015. $63,000 MSRP.

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More about A. Lange and Sohne 139.025 Grande Lange 1 Moon Platinum

This is a .950 platinum A. Lange & Sohne Grande Lange 1 Moon phase 139.025. It has an alligator leather strap with a platinum tang buckle, and a scratch resistant sapphire crystal. There is a rectangular quick date-correction button on the case edge at the 10 o'clock position, and another indented corrector at 8 o'clock. It has a screw down winding crown and an exhibition sapphire display case back secured with 6 screws, engraved with "A. LANGE & SOHNE-LIMITED-GLASHUTTE 1/SA," a serial number and hallmarks. The 41mm diameter solid three-body case, curved lugs, and stepped bezel, are polished. The dial is created from solid silver, and all the indicator hands are rhodium coated white gold, and with luminous inserts. The recessed silver hour/minute sub-dial is offset to the left side, with applied polished rhodium plated Roman Numerals at 3, 6, 9, and 12 o'clock, diamond shaped index hour markers, and a fine black printed minute/seconds scale. There is also a glass lunar disc that once properly set, the moon-phase display only needs to be corrected for one day every 122.6 years; it has a laser-cut treated surface with 1164 stars, while the moon sparkles due to the luminous compound behind the disc. There is a white gold-rimmed double big date aperture window at the 1 o'clock position, a 72-hour up/down power reserve arc between 2 and 4 o'clock, and a large subsidiary running small seconds dial is at 5 o'clock with luminous white gold Arabic numerals and a luminous white indicator hand. It's water resistant to 30 meters/100 feet, and the 10.4mm thick case, dial, and movement are all signed.

This A. Lange & Sohne Grande Lange 1 Moon phase Lumen 139.025 has a mechanical hand-wound ALS caliber L095.3 movement. It's made of Glashütte 3/4 plate in untreated German silver with a cotes-de-Geneve striped pattern. It has a classic screw balance with free-sprung balance spring crafted in-house, 7 screwed gold chatons, and it's constructed with 45 jewels, 446 components with beveled edges, and the balance-cock and intermediate wheel bridges are hand engraved, making very watch slightly different. It includes a straight-line lever escapement, a monometallic balance that's adjusted to 5 positions, and a self-compensating flat balance spring also made in house. There is a swan-neck micrometer regulator, a shock absorber device, and the mechanism oscillates at a frequency of 21,600 vph (3 Hz).

The A. Lange & Sohne Grande Lange 1 Moon phase Lumen 139.025 was introduced at the SIHH exhibition in 2014.