LANGE REF. 410.025 DATOGRAPH PERPETUAL CALENDAR PLATINUM
A. Lange & Söhne, Glashütte i. Sa., "Datograph Perpetual," Flyback, No. 48021, case No. 158023, Ref.
410.025. Made circa 2008.
Very fine and rare, platinum wristwatch with square button fly-back chronograph, register, tachometer,
with oversized date, day & night indicator and a platinum A. Lange & Söhne buckle. Accompanied
by the original fitted box,
instruction manual and a service invoice dated October 13, 2011.
Three-body, solid, polished and brushed, rounded bezel, transparent case back with 6 screws, pushbutton
10 for the date correction, sapphire crystals.
Matte silver, made from solid silver, applied white gold radial Roman numerals, baton indexes and
subsidiary dials for the seconds, the 30-minute register, the day/night indication, the day of the week,
the months and the
leap year, outer tachometer graduation and 1/5th seconds track with 5-minute/seconds Arabic markers,
apertures for the
oversized date at 12 and the moon phases at 6. Luminous white gold alpha hands.
Cal. L 952.1, Glashütte 3/4 plate in German silver, fausses cotes decoration, 45 jewels, including 4 in
gold chatons, straight-line lever escapement, monometallic balance adjusted to 5 positions,
shock absorber, self-compensating Breguet balance spring, swan-neck micrometer regulator, hack
hand-engraved balance bridge.