In Depth: A. Lange & Söhne Datograph Perpetual - YouTube - Andrew Morgan Watches

The video examines A. Lange & Söhne’s Datograph Perpetual, highlighting its intricate combination of a chronograph and a perpetual calendar—two of the most demanding watch complications. It explains how the brand, revived after the fall of the Berlin Wall, approached design by prioritizing the dial layout first and then engineering the movement to fit, resulting in a highly refined mechanism with 556 components, including a unique 3/4 bridge and a fly‑back chronograph. The watch’s technical achievements are showcased through detailed macro footage, revealing the precision required for part placement, the hand‑finished components, and the innovative single‑piece bridge that eliminates the need for adjustments. Beyond the engineering feats, the summary emphasizes the watch’s functional advantages, such as a single push‑button advancement of the perpetual calendar and a power reserve of two days despite its slim case. It also touches on the market positioning, noting a retail price around $180 000 and a secondary market value near $135 000, while underscoring the brand’s commitment to perfection and its lasting appeal among collectors.