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A. Lange & Söhne Ref. 405.031 Datograph Up/Down Wristwatch

ProbableCredible evidence exists but classification is not fully established.

Record status

Individual type · partial

Period

Circa 2016

Maker / issuer

A. Lange & Söhne

This A. Lange & Söhne Datograph Up/Down reference 405.031 is an 18K pink gold flyback chronograph wristwatch dating to circa 2016. According to the auction catalogue, it features a 41mm case housing the manual-wind calibre L.951.6 movement with 46 jewels.

The black dial presents an oversized double date display beneath 12 o'clock, subsidiary dials for running seconds and chronograph minutes, and an Up/Down power reserve indication at 6 o'clock. Accompanied by its stamped guarantee seal dated August 2016, instruction manual, and presentation box, the watch is fitted with a brown crocodile strap and an 18K pink gold deployant clasp.

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
Flyback chronograph wristwatch
Calibre
Manual, cal. L.951.6, 46 jewels
Reference
405.031
Dimensions
41mm diameter
Case Number
219’484
Case Material
18K pink gold
Place recorded
Germany
Movement Number
115’598
Maker / attribution
A. Lange & Söhne

Design

Visible features
• Black dial with dual light-coloured subsidiary dials and baton hour markers • Double date display window below the 12 o'clock position • Power reserve sub-indicator at 6 o'clock marked AB and AUF • Accompanied by guarantee paperwork, Datograph manual, and fitted presentation case
Dial Architecture and Display
Direct visual inspection of the front photograph confirms a black dial with baton hour markers and dual light-coloured subsidiary registers for running seconds and chronograph minutes. An oversized double date display window is situated below the 12 o'clock position. An Up/Down power reserve sub-indicator is located at 6 o'clock, marked with 'AB' and 'AUF'. The auction essay notes that the flyback chronograph configuration allows the mechanism to be reset to zero and restarted in mid-measurement by pressing and releasing the pusher.
Identity and Case Construction
Catalogued as reference 405.031 and model Datograph Up/Down, this A. Lange & Söhne timepiece is cased in 18K pink gold with a stated diameter of 41mm. The lot listing records case number 219’484 and notes that the case, dial, movement, and clasp are signed by the maker. The auction entry assigns a date of circa 2016 and lists the watch as 'Property from the Original Owner'. It is fitted to a crocodile strap equipped with an 18K pink gold A. Lange & Söhne deployant clasp.
Mechanism and Accompanying Accessories
The cataloguing identifies the movement as the manual calibre L.951.6 with 46 jewels, bearing movement number 115’598. Although the auction text states the movement can be viewed through a sapphire caseback, the movement and rear case are not visible in the provided primary front photograph. Accompanying documentation and accessories include an A. Lange & Söhne guarantee stamped by retailer Pro Hopetime Watch Co. Taiwan and dated 6th August 2016, alongside an instruction manual, product literature, leather folio, fitted presentation box, and outer packaging.

Identification

Reference
405.031
Serial number
219’484
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: Caseback and movement are not visible in the primary front photograph; mechanism details rely on auctioneer descriptions
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