A. Lange & Söhne Datograph Perpetual, Grey Dial - White Gold on Strap

price on request

On request

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Details

Basic Info

Ref. No. 410.030
Code 3584
Movement Manual winding
Case material White gold
Bracelet material Leather
Location United States, New York, New York
Price price on request
Availability On request

Caliber

Movement Manual winding
Movement/Caliber L952.1
Frequency 18000 A/h

Case

Case material White gold
Case diameter 41 mm
Thickness 13.5 mm
Glass Sapphire Glass
Dial Grey
Dial numerals Roman numerals

Bracelet/strap

Bracelet material Leather
Bracelet color Black
Clasp Buckle
Clasp material White Gold

Functions

Moonphase, Flyback, Date, Weekday, Month

Others

Display Back, Center Seconds, Small Seconds, Luminescent Hands, Blue Steel Hands

Description

Plates and bridges are made of untreated German silver decorated with perlage and Glashutte ribbing. The plates, bridges, whiplash spring and classic column wheel are chamfered and polished. The balance cock is hand-engraved. The large two-digit date apperture is at 12. The day of the week subdial is at 8, with the small day/night indicator dial just above it. The moon-phase display is at 6 o'clock. The month subdial is at 4 o'clock, with the small leap-year dial just below it. This remarkable timepiece is the first to incorporate a perpetual calendar with a chronograph. The calendar is accurate until the year 2100, when, because the year 2100 is not a leap year (it is a century year that is not divizable by 400), the calendar will require a manual advance of 1 day. The moon-phase is itself an incredibly precise movement, accurate for 122 years, after which, it too will require a one day adjustment. An ingenious interlock device prevents accidental date resetting on the Datograph Perpetual. After pulling out the crown and disengaging the interlock, the perpetual calendar can be purposefully reset. The calendar mechanism alone accounts for 223 parts. Also known as: A. Lange & Sohne 410.030, 410030

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