Named for the founder’s birth year, with Arabic numerals and a railway minute track inspired by historic pocket watches.
| Model | Reference | Case | Movement |
|---|---|---|---|
| 1815 | — | 38.5 mm | L051.1 |
| 1815 Chronograph | — | 39.5 mm | L951.5 |
Specs and prices are approximate and current as of 2026; confirm details with A. Lange & Söhne or an authorized dealer.