This A. Lange & Söhne Datograph, reference 403.035, is the first-generation execution of what many regard as the finest modern chronograph, presented in platinum with the black dial and silver subdials that give the series its purposeful, unmistakably Saxon character. It is made rarer still by its solid platinum Wellendorff bracelet — a piece of high jewellery from the German house that briefly crafted precious-metal bracelets for Lange, a collaboration long since ended and seldom encountered today. Powered by the hand-wound calibre L951.1, it is a column-wheel flyback chronograph paired with Lange's signature outsize date, a movement whose architecture and finishing are considered benchmarks of the craft. The platinum case measures 39mm across and 12.8mm in thickness, its density lending real weight and presence on the wrist. A cornerstone of modern German watchmaking, elevated by one of the most coveted bracelets in collecting.