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.
Panerai · Luminor Due
Panerai Luminor Due 43 mm Slate Sapphire
Reference 35057OR.91
Reference at a glance
- Brand
- Panerai
- Collection
- Luminor Due
- Model
- Panerai Luminor Due 43 mm Slate Sapphire
- Reference number
- 35057OR.91
- Year / era
- 1999 · 1990s — mechanical revival
- Complication
- Time only
- Movement
- In-house manual-winding
- Case material
- Sapphire crystal case
- Dial type
- Slate grey
- Strap / bracelet
- NATO textile strap
- Water resistance
- 150 m
- Limited-edition status
- Regular production, not a limited edition
Case, dial & bracelet
- Case dimensions
- 43 mm
- Case thickness
- 11.3 mm
- Case material
- Sapphire crystal case
- Bezel
- Bidirectional 24-hour Cerachrom
- Crystal
- Box sapphire with AR coating
- Dial
- Slate grey
- Hands
- Mercedes hour hand with Chromalight display
- Indexes
- Printed minute track with applied batons
- Bracelet / strap
- NATO textile strap
- Clasp / buckle
- Pin buckle in matching case metal
- Water resistance
- 150 m
Movement
- Movement / calibre
- Calibre 73C — In-house manual-winding
- Movement type
- Automatic with micro-rotor
- Frequency
- 28,800 vph (4 Hz)
- Power reserve
- 70 hours
- Number of jewels
- 21 jewels
- Complications
- Time only
- Functions
- Hours, minutes, seconds, date
- Watchmaker
- Assembled and regulated by a single watchmaker, who signs off the piece before casing.
Production & market
- Production period
- 1999 – 2010
- Limited-edition quantity
- Not applicable
- 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
Panerai Luminor Due 43 mm Slate Sapphire sits within Panerai's Luminor Due line, introduced in 1999. It carries the house codes established since 1860 — sapphire crystal case case, slate grey dial and in-house manual-winding — and is one of the references collectors use to date the evolution of the collection.
Interesting facts
- The bracelet tapers across its length, which is why the profile looks thinner on the wrist than the specification suggests.
The House
Panerai
Brand facts
- Founding year
- 1860
- Founder
- Giovanni Panerai
- Headquarters
- Italy
- Tier
- Luxury
- Major collections
- Luminor, Radiomir, Submersible, Luminor Due, Quaranta
- Signature technologies
- Hand-applied guilloché dials · Proprietary case-hardening and polishing · In-house hairspring production
- Famous movements
- In-house manual-winding · In-house automatic, chronometer certified · In-house automatic, Superlative Chronometer · In-house automatic chronograph
- Notable watches
- Panerai Luminor 39 mm Black Stainless (1968) · Panerai Luminor 44 mm Salmon Ceramic (1955) · Panerai Radiomir 40 mm Skeletonised Quartz (1963) · Panerai Radiomir 44 mm Green Carbon (1995)
Brand history
Panerai has spent more than 166 years refining a single idea: a watch should outlive its owner. From the earliest workshop pieces to today's Luminor, the house has balanced technical ambition with a recognisable design language, and its collections remain among the most closely followed by collectors worldwide.
Giovanni Panerai established Panerai in 1860, working from Italy at a time when precision was measured by hand. The founder's obsession with finishing and accuracy still defines every Panerai calibre produced today.
Historical milestones
1860
Giovanni Panerai founds Panerai in Italy.
1899
Panerai earns its first international recognition for precision timekeeping.
1969
The quartz era forces Panerai to redefine mechanical watchmaking.
1990
Panerai enters the modern collector market with its signature lines.
2024
Panerai continues to produce Luminor, Radiomir, Submersible and other icons in limited numbers.