The A. Lange & Sohne Datograph 39mm watch. Model reference: 403.035. This is the purists choice of the iconic Datograph in the noble metal of Platinum. The Datograph is in the Saxonia family of Lange watches. The Lange Datograph was launched in 1999 to critical acclaim, immediately becoming the modern, high-end chronograph. The name “Datograph” is derived from the fact that the piece contains a big date (“outsize date” as Lange calls it) and a chronograph. The black dial includes Lange’s patented large date display at 12 o’clock, flyback chronograph function with 30-minute register at 4 o’clock and small seconds subdial at 8 o’clock The watch features the completely in-house caliber L951.1 mechanical manual winding movement containing over 400 parts including 40 jewels with an approximate 36-hour power reserve. The exhibition caseback gives a peek at the sophisticated and intricate movement. The back gives a view of the hairspring and balance wheel with intricate engravings around them. It also gives visibility to the chronograph function when in use. Included is a hand-stitched, black crocodile strap with an A. Lange & Sohne, platinum ardillon buckle. Case, dial and movement signed A. Lange & Sohne. The watch comes in original packaging, with a set of documents.