2024 marks the twenty fifth anniversary of A. Lange & Sohne’s Datograph and it is celebrating with a brand new flagship mannequin. Dubbed the Datograph Perpetual Tourbillon Honeygold Lumen, it combines a 41.5mm Honeygold case with a smoked sapphire dial and luminous components that glow at nighttime. The smoked dial permits for views of the manufacture calibre L952.4 manually-wound motion, additionally seen by means of the sapphire caseback. Functionally, the watch has operating seconds, day of the week, and a day/night time indicator on the left subdial, a chronograph minutes counter, month, and bissextile year indicators on the suitable, a luminous moonphase at 6 o’clock, and a giant date show at 12. It’s restricted to 50 numbered items and sits on a hand-stitched darkish brown alligator leather-based strap with a Honeygold buckle.