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.
Audemars Piguet · Jules Audemars
Audemars Piguet Jules Audemars 40 mm Slate 18k
Reference 31018OR.63
Reference at a glance
- Brand
- Audemars Piguet
- Collection
- Jules Audemars
- Model
- Audemars Piguet Jules Audemars 40 mm Slate 18k
- Reference number
- 31018OR.63
- Year / era
- 1982 · 1980s — quartz-crisis era
- Complication
- Tourbillon
- Movement
- In-house manual-winding, hand-finished
- Case material
- 18k yellow gold
- Dial type
- Slate grey
- Strap / bracelet
- Jubilee bracelet
- Water resistance
- 100 m
- Limited-edition status
- Regular production, not a limited edition
Case, dial & bracelet
- Case dimensions
- 40 mm
- Case thickness
- 10.2 mm
- Case material
- 18k yellow gold
- Bezel
- Smooth polished
- Crystal
- Anti-reflective sapphire, double-domed
- Dial
- Slate grey
- Hands
- Faceted dauphine hands, polished by hand
- Indexes
- Printed minute track with applied batons
- Bracelet / strap
- Jubilee bracelet
- Clasp / buckle
- Pin buckle in matching case metal
- Water resistance
- 100 m
Movement
- Movement / calibre
- Calibre 28D — In-house manual-winding, hand-finished
- Movement type
- Automatic, self-winding
- Frequency
- 21,600 vph (3 Hz)
- Power reserve
- 5 days
- Number of jewels
- 40 jewels
- Complications
- Tourbillon
- Functions
- Dive time, running seconds
- Watchmaker
- The calibre is built in-house and adjusted in five positions before delivery.
Production & market
- Production period
- 1982 – 1996
- Limited-edition quantity
- Not applicable
- Current market information
- Thin secondary-market supply — pricing is set piece by piece at auction.
Designer
Marc Newson
Marc Newson is an Australian industrial designer whose work spans Qantas cabins, Apple hardware and Jaeger-LeCoultre's Atmos clocks; his watch design reduces the object to pure geometry and legibility.
Historical significance
Audemars Piguet Jules Audemars 40 mm Slate 18k sits within Audemars Piguet's Jules Audemars line, introduced in 1982. It carries the house codes established since 1875 — 18k yellow gold case, slate grey 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
- The reference was originally planned as a one-year run and stayed in the catalogue for well over a decade.
- The movement's bridges are decorated even where they will never be seen once the watch is cased.
The House
Audemars Piguet
Brand facts
- Founding year
- 1875
- Founder
- Jules Louis Audemars & Edward Auguste Piguet
- Headquarters
- Switzerland
- Tier
- Ultra-Luxury & Haute Horlogerie
- Major collections
- Royal Oak, Royal Oak Offshore, Royal Oak Concept, Code 11.59, Millenary, Jules Audemars, [Re]master01
- Signature technologies
- Shock-absorbing movement mounting · Composite and ceramic case materials · Certified chronometer regulation
- Famous movements
- In-house tourbillon, manual-winding · In-house automatic with 22k gold rotor · In-house manual-winding, hand-finished · In-house automatic micro-rotor
- Notable watches
- Audemars Piguet Royal Oak 44 mm Ice Ceramic (1993) · Audemars Piguet Royal Oak 37 mm Salmon Ceramic (1959) · Audemars Piguet Royal Oak 39 mm Slate Ceramic (1972) · Audemars Piguet Royal Oak 40 mm Black Ceramic (1980)
Brand history
Audemars Piguet has spent more than 151 years refining a single idea: a watch should outlive its owner. From the earliest workshop pieces to today's Royal Oak, the house has balanced technical ambition with a recognisable design language, and its collections remain among the most closely followed by collectors worldwide.
Jules Louis Audemars & Edward Auguste Piguet established Audemars Piguet in 1875, working from Switzerland at a time when precision was measured by hand. The founder's obsession with finishing and accuracy still defines every Audemars Piguet calibre produced today.
Historical milestones
1875
Jules Louis Audemars & Edward Auguste Piguet founds Audemars Piguet in Switzerland.
1899
Audemars Piguet earns its first international recognition for precision timekeeping.
1969
The quartz era forces Audemars Piguet to redefine mechanical watchmaking.
1990
Audemars Piguet enters the modern collector market with its signature lines.
2024
Audemars Piguet continues to produce Royal Oak, Royal Oak Offshore, Royal Oak Concept and other icons in limited numbers.
More Jules Audemars
Audemars Piguet Jules Audemars 41 mm Blue Stainless
Ref. 75771ST.25
Audemars Piguet Jules Audemars 41 mm Black Grade
Ref. 34260OR.41
Audemars Piguet Jules Audemars 39 mm Salmon Grade
Ref. 32374OR.58
Audemars Piguet Jules Audemars 42 mm Black Ceramic
Ref. 42235OR.89
Audemars Piguet Jules Audemars 44 mm Blue Ceramic
Ref. 75231OR.81