Rooted in the birth year of Ferdinand Adolph Lange, the 1815 Chronograph carries a name that speaks directly to the brand's heritage. This 2007 example, reference 401.031, is housed in a round 39mm rose gold case with an exhibition caseback that reveals the manually wound movement within. The flyback chronograph function enables timing sequences to be reset and restarted in a single action, complementing the standard hours, minutes, and seconds displays.
The black dial is laid out with Arabic numerals and a railway track minute scale, drawing a clear visual line back to the pocket watch traditions of 19th-century German horology. Manufactured in Germany, the piece reflects the disciplined approach to movement architecture for which A. Lange & Söhne is known, with the caliber on full view through the sapphire exhibition caseback.
The watch is fitted on a brown alligator strap secured by a tang buckle, offering a classic and understated presentation. Water resistance is rated to 30 meters. Box and papers are included, making this a complete example for the discerning collector.