LANGE REF. 310.025 SAX-O-MAT PERPETUAL CALENDAR PLATINUM
A.Lange & Söhne, Glashütte i./Sa., Langematik Perpetual, movement No. 28411, case No. 138390, Ref. 310.025. Sold
on October 19th, 2004. Production of this reference started in 2001.
Very fine and rare, self-winding, water-resistant, platinum wristwatch with perpetual calendar, leap year indication,
oversized date, 24-hour indication, moon phases and a platinum Lange buckle. Accompanied by a Lange & Söhne
winding box, push-pin, guarantee and instruction manual.
Three-body, solid, polished and brushed, rounded bezel, transparent case back with 6 screws, sapphire crystals,
correctors on the band, button at 10 to advance the date.
Solid silver with applied radial white gold Roman numerals, subsidiary dials for the days of the week, the
months, the leap year, the 24 hours with day/night indication and the seconds, apertures for the oversized date at
12 and the moon phases at 6. Luminous white gold alpha hands.
Cal. L922.1 Sax-O-Mat with zero-reset feature, Glashütte 3/4 plate in German silver, fausses cotes decoration,
43 jewels, straight line lever escapement, monometallic balance adjusted to 5 positions, shock absorber, self-compensating
flat balance spring, swan neck micrometer regulator, 21K gold bi-directional micro-rotor with platinum
segment, hand-engraved balance bridge.