A. Lange and Sohne 320.025 Lange 1 Daymatic Platinum (31398)

31398 A. Lange & Sohne 320.025 Lange 1 Daymatic 320025, platinum case on a strap with a platinum tang buckle, automatic A. Lange & Sohne caliber L021.1, 50-hour power reserve, silver dial with applied white gold numerals, retrograde day of the week indicator, big date at 11 o'clock, sapphire crystal, display back, blue steel hands, size 39.5mm, thickness 10.4mm. Like New with original box and papers which are dated June of 2014.

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More about A. Lange and Sohne 320.025 Lange 1 Daymatic Platinum

This is a platinum A. Lange & Sohne Lange 1 Daymatic 320.025. It has a blue leather alligator strap with a matching platinum tang buckle. The three-body case downturned lugs, and rounded bezel are polished. The dial is silver with applied white gold Roman numerals and alpha hands, and it has a sapphire crystal and display case back. The double window big date is at 11 o'clock, and the retrograde day of the week arc is between 8 and 10 o'clock. The large off-center hour and minute dial is at 3 o'clock, and the small seconds subsidiary aperture is at 6 o'clock. It has a power reserve of 50 hours when fully wound.

This A. Lange & Sohne Lange 1 Daymatic 320.025 has a mechanical automatic self-winding Lange caliber L021.1 movement. It's made of ¾ plate German silver constructed with 426 parts and 67 jewels. It has 7 screwed gold chatons, a straight-line lever escapement, and it features a monometallic shock resistant balance with eccentric poising weights adjusted to 5 positions, and a self-compensating Lange flat balance spring crafted to a tolerance of 100 nanometers. It includes a swans neck micrometer regulator, with a hand-engraved balance and intermediate wheel bridges. The mechanism oscillates at 21,600 vph. and there is a precision beat-adjustment system with laterally set screws and a whiplash spring.

The A. Lange & Sohne Lange 1 Daymatic 320.025 debuted in 2010 and is still in current production.