A. Lange and Sohne 403.031 Datograph "Dufour" 18K Rose Gold Black Dial

The A. Lange and Sohne 403.031 Datograph 18K Rose Gold Black Dial, also celebrated in collecting circles as the "Dufour," is an embodiment of high horology and connoisseur-level prestige. Introduced in the early 2000s, the model is renowned for its L951.1 manually wound chronograph caliber—highly regarded for both its technical excellence and visual beauty, with a classic German three-quarter plate and hand-engraved balance cock. The "Dufour" nickname refers to the famed independent watchmaker Philippe Dufour’s public admiration for this reference, cementing its status as a modern icon and a benchmark for chronograph finishing. The 39mm rose gold case and striking black dial provide an unmistakable, elegant presence, complemented by its brown alligator strap. With a sapphire crystal and 12.8mm thickness, the watch wears with balanced proportion while providing both flyback chronograph and big date complications, hallmarks of the model line. Collectors are drawn to the Datograph for its innovative in-house movement and the high level of hand-finishing rarely matched even at the upper echelons of Swiss and German watchmaking. With only a handful ever crafted in this configuration, the 403.031 exemplifies the blend of technical mastery and design purity for which the Glashutte brand is revered. This is a reference that sits at the crossroads of engineering prowess and artistry, consistently sought after on the secondary market for its historical significance and exceptional execution. Like New with A. Lange and Sohne box and undated papers.