A. LANGE & SÖHNE PLATINUM FLYBACK DATOGRAPH
A. Lange & Söhne, Glashütte i. Sa., "Datograph, Flyback", movement No. 17949,
case No. 123500, Ref. 403.035. Made circa 2007.
Very fine and rare, platinum wristwatch with square button fly-back chronograph,
register, tachometer, oversized date and a platinum A. Lange & Söhne buckle.
Three-body, solid, polished and brushed, rounded bezel, transparent case back
with 6 screws, push-button at 10 for the date correction, sapphire crystals.
Black, made from solid silver, applied white gold radial Roman numerals, baton
indexes and luminous dots, subsidiary silver dials for the seconds and instantaneous
30-minute register, outer graduation and 1/5th seconds track with 5-minute/seconds
Arabic markers, outermost tachometer scale, double apertures for the oversized date at
12. Luminous white gold alpha hands.
Cal. L 951.1, Glashütte 3/4 plate in German silver, fausses cotes decoration,
40 jewels, including 4 in screw-mounted gold chatons, straight-line lever escapement,
monometallic balance adjusted to 5 positions, shock absorber, self-compensating
Breguet balance spring, swan-neck micrometer regulator, hack mechanism,
hand-engraved balance bridge, hack mechanism.