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A. Lange & Söhne

A. Lange & Söhne Datograph 403.041

The A. Lange & Söhne Datograph (reference 403.041) is a 39 mm 18k yellow gold watch. It runs on the manual caliber L951.1 with a 36-hour power reserve. It is no longer in production.

Specifications

Case

Reference
403.041
Collection
Datograph
Case size
39 mm
Thickness
12.8 mm
Case material
18k yellow gold
Case shape
Round
Crystal
Sapphire
Bracelet / strap
Alligator leather strap

Movement

Movement
Manual
Caliber
L951.1
Power reserve
36 hours
Frequency
18,000 vph
Jewels
40
Functions
Flyback chronograph, Big date, Small seconds

Production

Production
Discontinued

How it compares within the Datograph family

Side by side with other references in the same collection, from the catalog.

ReferenceSizeMaterialDialCaliberYears
403.041 (This watch)39 mm18k yellow gold—L951.1—
403.03139 mm18k pink goldBlackL951.1—
403.03239 mm18k pink goldSilverL951.11999–2012
403.03539 mmPlatinumBlackL951.11999–2012
404.03543.2 mmPlatinumBlackL001.12004–
405.03141 mm18k pink goldBlackL951.62015–
405.03541 mmPlatinumBlackL951.62012–
410.03841 mm18k white goldGreyL952.12015–
424.03843.2 mm18k white goldGreyL132.12018–

About the Datograph family

The Datograph was introduced in 1999 as a flyback chronograph with Lange's outsize date and a precisely jumping minute counter. Its hand-wound caliber L951.1 is known for its finishing and for the layout of its column-wheel chronograph.

Later versions include the Datograph Perpetual with a perpetual calendar and the Datograph Up/Down with caliber L951.6, which added a power reserve display. The catalog lists references in pink, yellow and white gold and platinum. Dealers identify the generation, metal and dial and ask for a service record from Lange.

Quick answers

What size is the A. Lange & Söhne Datograph 403.041?
The A. Lange & Söhne Datograph 403.041 has a 39 mm case, 12.8 mm thick.
What movement does the A. Lange & Söhne Datograph 403.041 use?
It uses the manual caliber L951.1, with a 36-hour power reserve.
Is the A. Lange & Söhne Datograph 403.041 still in production?
No. It was made until 2012.
What is the A. Lange & Söhne Datograph 403.041 made of?
The case is 18k yellow gold. Bracelet or strap: Alligator leather strap.

Catalog facts checked September 2026.