A. Lange & Söhne Zeitwerk

About this reference

The A. Lange & Söhne Zeitwerk reference 140.025 in platinum was introduced in 2009 as part of the model's debut collection and remained in production until approximately 2014. Collectors prioritize this reference for its role as the foundational execution of the digital jumping numerals complication, powered by the manual-wind Calibre L043.1. The movement incorporates a constant-force escapement (remontoir d’égalité) to manage the energy required to advance the three discs simultaneously every minute. The 41.9mm platinum case features a solid silver dial with a rhodium-plated German silver time bridge and a power reserve indicator at twelve o'clock. On the secondary market, this reference typically trades in the $75,000 to $95,000 range. A notable production detail is the "Luminous" variant, reference 140.035, which utilized a smoked sapphire dial and was limited to 100 pieces, often commanding significantly higher premiums at auction.