Lange & Söhne Very Fine Ref. 310.025 Platinum "Langematik Perpetual"
Case: No. 159682, three body, platinum, polished and brushed, rounded bezel, 38.5 mm, transparent case back secured with screws, sapphire crystals, correctors on the band
Dial: solid silver, applied radial white gold Roman chapters, 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, moon phases at six, luminous white gold alpha hands
Movement: No. 49484, caliber L922.1, "Sax-O-Mat" with zero reset feature, 3/4 plate German silver, 43 jewels, fausses cotes decoration, straight line lever, monometallic balance adjusted to five positions, shock absorber, swan's neck micrometric regulator, 21k gold bi-directional microrotor with platinum segment, hand engraved balance bridge
Band: crocodile with original platinum buckle
Signed: A. Lange & Söhne with outer box, inner box with fitted watch winder, books and papers

Type: Lange & Söhne Very Fine Ref. 310.025 Platinum "Langematik Perpetual"
Model: 310.025 E
Dial: solid silver, applied white gold Roman numerals
Hands; luminous white gold alpha hands
Metal: platinum
Case No: 159682
Case Info: three body, transparent case back
Case Width: 38.5 mm
Thickness: 10.5 mm
Crystal: sapphires
Watch Movement: No. 49484, caliber L922.1, "Sax-O-Mat" with zero reset feature, 3/4 plate German silver, 43 jewels, fausses cotes decoration, straight line lever, monometallic balance adjusted to five positions, shock absorber, swan's neck micrometric regulator, 21k gold bi-directional microrotor with platinum segment, hand engraved balance bridge
Band: black crocodile, original platinum buckle
Circa: 2006
Condition: dial is superb, case and movement are very good, new crocodile band (not Lange) with original platinum Lange buckle, original boxes with winder, all papers, leatherette covering on box with some scuffs