A. Lange & Söhne Zeitwerk Reference 140.029
Record status
Individual type · partial
Period
circa 2009
Maker / issuer
A. Lange & SöhneThe A. Lange & Söhne Zeitwerk, reference 140.029, is a wristwatch featuring a mechanical digital display. Introduced in 2009, the design utilizes large jumping numerical disks for hours and minutes, inspired by the five-minute clock at the Semper Opera House in Dresden.
The watch is constructed with a 41.9 mm white gold case and a black dial framed by a German silver bridge. It is powered by the manual-wind L043.1 caliber, which includes a patented constant-force escapement to regulate the energy required for the instantaneous disk jumps. Additional features include a power reserve indicator at 12 o'clock, a subsidiary seconds dial at 6 o'clock, and a sapphire crystal case back displaying the movement's hand-finished components, including gold chatons and blued screws.
The watch is fitted with a black alligator leather strap and a white gold deployant buckle.
Evidence at a glance
- Linked sources
- 1
- Photograph views
- 1
- Catalogue references
- 0
Counts describe this entry’s documentation, not authenticity, rarity or completeness. Photographs may show one specimen; check each caption and licence.
Technical characteristics
- Type
- Digital-display wristwatch
- Maker
- A. Lange & Söhne
- Strap
- Black alligator leather
- Movement
- L043.1 manual caliber
- Reference
- 140.029
- Release Date
- 2009
- Case Diameter
- 41.9 mm
- Case Material
- 18k white gold
- Place recorded
- Germany
- Maker / attribution
- A. Lange & Söhne
Design
- Case and Dial
- The watch features a 41.9 mm case crafted from 18k white gold. The black dial is arranged with a balanced layout, incorporating a German silver bridge that provides structure to the digital time displays. The hours are displayed through a large numerical window on the left, while the minutes are displayed in a corresponding window on the right. Positioned at the 12 o'clock location is a power reserve indicator labeled with 'AB' and 'AUF', indicating the winding state. Directly below, centered at the 6 o'clock position, is a subsidiary dial for seconds. The overall design is inspired by the historical five-minute clock found at the Semper Opera House in Dresden.
- Visible features
- • Large jumping numeric windows for hours and minutes • Power reserve indicator marked AB/AUF • Subsidiary seconds dial at the 6 o'clock position • Exposed crown positioned at 2 o'clock
- Movement and Mechanics
- The timepiece is driven by the manual-wind caliber L043.1. A central technical feature is the patented constant-force escapement, which manages the energy distribution necessary to power the instantaneous jumping of the digital disks every minute. This mechanism is designed to ensure consistent energy delivery without compromising the overall timekeeping accuracy of the movement. Through the sapphire crystal case back, the movement is visible. The decoration includes German silver plates, hand-engraved elements, gold chatons, and blued screws. These components reflect the finishing standards employed in the brand's Glashütte workshops.
- Provenance and Specifications
- The watch is identified by the model reference 140.029 and is noted as belonging to the first generation of the Zeitwerk series. It is paired with a black alligator leather strap and secured with a white gold deployant buckle. The model was originally introduced to the market in 2009. The provided technical specifications confirm the use of 18k white gold for the case construction and the inclusion of a constant-force mechanism as a key functional component. The information is based on secondary catalogue reporting and does not constitute an independent verification of the object's specific provenance or history.
Identification
- Reference
- 140.029
- Source note
- Facts transcribed from the linked source listing or collection record. Attribution and specifications are source-reported and have not been independently authenticated.
Catalogue references
No catalogue numbers recorded. Numbers are only published once transcribed from a verified edition of a standard catalogue — they are never inferred.
Research required
- Research required: The source provides general model information rather than a condition report for this specific unit
- Research required: Verification of the specific serial number for this individual object is not provided in the source