Front view
Dial, hands and bezel as delivered.
Case-back view
Case-back engraving and, where fitted, the sapphire display.
Movement
Calibre with its finishing and decoration.
On the wrist
Worn shot for proportion and strap drape.
A. Lange & Söhne · Zeitwerk
A. Lange & Söhne Zeitwerk 37 mm Mother-of-pearl Stainless
Reference 50369ST.58
Reference at a glance
- Brand
- A. Lange & Söhne
- Collection
- Zeitwerk
- Model
- A. Lange & Söhne Zeitwerk 37 mm Mother-of-pearl Stainless
- Reference number
- 50369ST.58
- Year / era
- 1975 · 1970s — quartz-crisis era
- Complication
- Time only
- Movement
- In-house manual-winding, hand-finished
- Case material
- Stainless steel
- Dial type
- Mother-of-pearl
- Strap / bracelet
- NATO textile strap
- Water resistance
- 50 m
- Limited-edition status
- Limited edition of 188 pieces
Case, dial & bracelet
- Case dimensions
- 37 mm
- Case thickness
- 8.8 mm
- Case material
- Stainless steel
- Bezel
- Emerald-set
- Crystal
- Sapphire with internal AR treatment
- Dial
- Mother-of-pearl
- Hands
- Skeletonised sword hands, white luminescent
- Indexes
- Applied Roman numerals
- Bracelet / strap
- NATO textile strap
- Clasp / buckle
- Folding clasp in matching case metal
- Water resistance
- 50 m
Movement
- Movement / calibre
- Calibre 21E — In-house manual-winding, hand-finished
- Movement type
- Automatic, self-winding
- Frequency
- 36,000 vph (5 Hz)
- Power reserve
- 38 hours
- Number of jewels
- 25 jewels
- Complications
- Time only
- Functions
- Hours, minutes, small seconds
- Watchmaker
- Assembled and regulated by a single watchmaker, who signs off the piece before casing.
Production & market
- Production period
- 1975 – 1978
- Limited-edition quantity
- 188 pieces
- Current market information
- Trades close to retail on the secondary market, with steady demand for full-set examples.
Designer
In-house design studio
The reference was drawn by the manufacture's internal design office, where case, dial and movement architects work alongside the watchmakers rather than as an outside commission.
Historical significance
A. Lange & Söhne Zeitwerk 37 mm Mother-of-pearl Stainless sits within A. Lange & Söhne's Zeitwerk line, introduced in 1975. It carries the house codes established since 1845 — stainless steel case, mother-of-pearl dial and in-house manual-winding, hand-finished — and is one of the references collectors use to date the evolution of the collection.
Interesting facts
- Early production dials show a slightly different minute track, and collectors pay a premium for them.
- The reference was originally planned as a one-year run and stayed in the catalogue for well over a decade.
- The bracelet tapers across its length, which is why the profile looks thinner on the wrist than the specification suggests.
The House
A. Lange & Söhne
Brand facts
- Founding year
- 1845
- Founder
- Ferdinand Adolph Lange
- Headquarters
- Germany
- Tier
- Ultra-Luxury & Haute Horlogerie
- Major collections
- Lange 1, Saxonia, Odysseus, Datograph, Zeitwerk, 1815, Richard Lange
- Signature technologies
- Composite and ceramic case materials · In-house hairspring production
- Famous movements
- In-house tourbillon, manual-winding · In-house manual-winding, hand-finished · In-house automatic with 22k gold rotor · In-house automatic micro-rotor
- Notable watches
- A. Lange & Söhne Lange 1 40 mm Slate Platinum (1978) · A. Lange & Söhne Lange 1 39 mm Green Stainless (1969) · A. Lange & Söhne Lange 1 44 mm Blue Quartz (1954) · A. Lange & Söhne Lange 1 41 mm Silvered Quartz (1973)
Brand history
A. Lange & Söhne has spent more than 181 years refining a single idea: a watch should outlive its owner. From the earliest workshop pieces to today's Lange 1, the house has balanced technical ambition with a recognisable design language, and its collections remain among the most closely followed by collectors worldwide.
Ferdinand Adolph Lange established A. Lange & Söhne in 1845, working from Germany at a time when precision was measured by hand. The founder's obsession with finishing and accuracy still defines every A. Lange & Söhne calibre produced today.
Historical milestones
1845
Ferdinand Adolph Lange founds A. Lange & Söhne in Germany.
1885
A. Lange & Söhne earns its first international recognition for precision timekeeping.
1969
The quartz era forces A. Lange & Söhne to redefine mechanical watchmaking.
1990
A. Lange & Söhne enters the modern collector market with its signature lines.
2024
A. Lange & Söhne continues to produce Lange 1, Saxonia, Odysseus and other icons in limited numbers.