All Jacob & Co.
Jacob & Co. Billionaire 36 mm Salmon Carbon
Jacob & Co. Billionaire 36 mm Salmon Carbon — Front view

Front view

Dial, hands and bezel as delivered.

Jacob & Co. Billionaire 36 mm Salmon Carbon — Case-back view

Case-back view

Case-back engraving and, where fitted, the sapphire display.

Jacob & Co. Billionaire 36 mm Salmon Carbon — Movement

Movement

Calibre with its finishing and decoration.

On the wrist

On the wrist

Worn shot for proportion and strap drape.

Jacob & Co. · Billionaire

Jacob & Co. Billionaire 36 mm Salmon Carbon

Reference 31093OR.23

Reference at a glance

Brand
Jacob & Co.
Collection
Billionaire
Model
Jacob & Co. Billionaire 36 mm Salmon Carbon
Reference number
31093OR.23
Year / era
2020 · 2020s — modern production
Complication
Time only
Movement
In-house automatic micro-rotor
Case material
Carbon TPT
Dial type
Salmon
Strap / bracelet
Alligator leather with folding clasp
Water resistance
100 m
Limited-edition status
Regular production, not a limited edition
Compare this reference

Case, dial & bracelet

Case dimensions
36 mm
Case thickness
12.6 mm
Case material
Carbon TPT
Bezel
Fluted 18k gold
Crystal
Anti-reflective sapphire, double-domed
Dial
Salmon
Hands
Blued steel Breguet-style hands
Indexes
Applied Arabic numerals with luminous coating
Bracelet / strap
Alligator leather with folding clasp
Clasp / buckle
Folding clasp in matching case metal
Water resistance
100 m

Movement

Movement / calibre
Calibre 48C — In-house automatic micro-rotor
Movement type
Automatic with micro-rotor
Frequency
25,200 vph (3.5 Hz)
Power reserve
72 hours
Number of jewels
37 jewels
Complications
Time only
Functions
Hours, minutes, small seconds
Watchmaker
The calibre is built in-house and adjusted in five positions before delivery.

Production & market

Production period
2020 – 2025
Limited-edition quantity
Not applicable
Current market information
Values have stabilised after the 2022 correction; condition and box-and-papers drive the premium.

Designer

Jörg Hysek

Jörg Hysek left Rolex and Seiko's European studios to build a design practice in Geneva, giving houses such as Vacheron Constantin, Breguet, Seiko and TAG Heuer their sculptural, architecture-led cases before founding his own brand, HD3.

Historical significance

Jacob & Co. Billionaire 36 mm Salmon Carbon sits within Jacob & Co.'s Billionaire line, introduced in 2020. It carries the house codes established since 1986 — carbon tpt case, salmon 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 case is finished by hand, alternating polished and satin-brushed surfaces in a single pass so the edges stay razor sharp.
  • Early production dials show a slightly different minute track, and collectors pay a premium for them.
  • The bracelet tapers across its length, which is why the profile looks thinner on the wrist than the specification suggests.
JA

The House

Jacob & Co.

Brand facts

Founding year
1986
Founder
Jacob Arabo
Headquarters
United States
Tier
Ultra-Luxury & Haute Horlogerie
Major collections
Astronomia, Billionaire, Bugatti Chiron, Casino Tourbillon, Epic X, Twin Turbo Furious, Five Time Zone
Signature technologies
Anti-magnetic silicon escapement · Hand-applied guilloché dials · Composite and ceramic case materials
Famous movements
In-house automatic with 22k gold rotor · In-house automatic micro-rotor · In-house manual-winding, hand-finished · In-house tourbillon, manual-winding
Notable watches
Jacob & Co. Astronomia 40 mm Meteorite 18k (2001) · Jacob & Co. Astronomia 42 mm Blue Sapphire (2002) · Jacob & Co. Astronomia 42 mm Skeletonised Carbon (1986) · Jacob & Co. Astronomia 39 mm Green Platinum (2002)

Brand history

Jacob & Co. has spent more than 40 years refining a single idea: a watch should outlive its owner. From the earliest workshop pieces to today's Astronomia, the house has balanced technical ambition with a recognisable design language, and its collections remain among the most closely followed by collectors worldwide.

Jacob Arabo established Jacob & Co. in 1986, working from United States at a time when precision was measured by hand. The founder's obsession with finishing and accuracy still defines every Jacob & Co. calibre produced today.

Historical milestones

  1. 1986

    Jacob Arabo founds Jacob & Co. in United States.

  2. 1990

    Jacob & Co. enters the modern collector market with its signature lines.

  3. 2024

    Jacob & Co. continues to produce Astronomia, Billionaire, Bugatti Chiron and other icons in limited numbers.

More Billionaire