A. Lange & Söhne Datograph Up/Down — Price on Request

A. Lange & Söhne Datograph Up/DownManufacturer specifications for reference 405.031: Movement: manually wound calibre L951.6 Power reserve: 60 hours when fully wound Chronograph: column-wheel mechanism with flyback and precisely jumping minute counter Displays: hours, minutes, small seconds, outsize date and power-reserve indicator Case: 18-carat pink gold, 41 mm diameter, 13.1 mm thick Case back: sapphire crystal Frequency: 18,000 semi-oscillations per hour (2.5 Hz) Movement components: 451 Factory water-resistance rating: 3 bar Model identification is based on the photograph. Please contact us to confirm the exact reference and this watch’s condition, service history and current water resistance.Source: A. Lange & Söhne technical specifications