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 39 mm Blue Sapphire
Reference 26587OR.11
Reference at a glance
- Brand
- A. Lange & Söhne
- Collection
- Zeitwerk
- Model
- A. Lange & Söhne Zeitwerk 39 mm Blue Sapphire
- Reference number
- 26587OR.11
- Year / era
- 1964 · 1960s — pre-quartz mechanical era
- Complication
- Time and date
- Movement
- In-house automatic micro-rotor
- Case material
- Sapphire crystal case
- Dial type
- Blue "Grande Tapisserie"
- Strap / bracelet
- Integrated steel bracelet
- Water resistance
- 500 m
- Limited-edition status
- Regular production, not a limited edition
Case, dial & bracelet
- Case dimensions
- 39 mm
- Case thickness
- 10.2 mm
- Case material
- Sapphire crystal case
- Bezel
- Fluted 18k gold
- Crystal
- Anti-reflective sapphire, double-domed
- Dial
- Blue "Grande Tapisserie"
- Hands
- Rhodium-plated baton hands with luminous fill
- Indexes
- Applied Roman numerals
- Bracelet / strap
- Integrated steel bracelet
- Clasp / buckle
- Triple-folding clasp with safety catch
- Water resistance
- 500 m
Movement
- Movement / calibre
- Calibre 60A — In-house automatic micro-rotor
- Movement type
- High-frequency automatic
- Frequency
- 28,800 vph (4 Hz)
- Power reserve
- 5 days
- Number of jewels
- 40 jewels
- Complications
- Time and date
- Functions
- GMT second time zone, date
- Watchmaker
- Finishing, assembly and timing are carried out in the manufacture's own atelier.
Production & market
- Production period
- 1964 – 1975
- Limited-edition quantity
- Not applicable
- Current market information
- Thin secondary-market supply — pricing is set piece by piece at auction.
Designer
Gérald Genta
Gérald Genta (1931–2011) trained as a goldsmith in Geneva and became the most influential watch designer of the 20th century. Working freelance, he sketched the Audemars Piguet Royal Oak overnight in 1970, followed by the Patek Philippe Nautilus, the IWC Ingenieur SL and the Bulgari Bulgari — defining the integrated-bracelet luxury sports watch as a category.
Historical significance
A. Lange & Söhne Zeitwerk 39 mm Blue Sapphire sits within A. Lange & Söhne's Zeitwerk line, introduced in 1964. It carries the house codes established since 1845 — sapphire crystal case case, blue "grande tapisserie" dial and in-house automatic micro-rotor — and is one of the references collectors use to date the evolution of the collection.
Interesting facts
- The reference was originally planned as a one-year run and stayed in the catalogue for well over a decade.
- Early production dials show a slightly different minute track, and collectors pay a premium for them.
- The movement's bridges are decorated even where they will never be seen once the watch is cased.
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.
More Zeitwerk
A. Lange & Söhne Zeitwerk 40 mm Meteorite Quartz
Ref. 65470OR.56
A. Lange & Söhne Zeitwerk 42 mm Blue Carbon
Ref. 30433OR.72
A. Lange & Söhne Zeitwerk 43 mm Black Ceramic
Ref. 99059OR.86
A. Lange & Söhne Zeitwerk 37 mm Mother-of-pearl Stainless
Ref. 50369ST.58
A. Lange & Söhne Zeitwerk 40 mm Slate Grade
Ref. 27753OR.84