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.
Jacob & Co. · Astronomia
Jacob & Co. Astronomia 42 mm Skeletonised Carbon
Reference 58471OR.69
Reference at a glance
- Brand
- Jacob & Co.
- Collection
- Astronomia
- Model
- Jacob & Co. Astronomia 42 mm Skeletonised Carbon
- Reference number
- 58471OR.69
- Year / era
- 1986 · 1980s — mechanical revival
- Complication
- Chronograph
- Movement
- In-house automatic micro-rotor
- Case material
- Carbon TPT
- Dial type
- Skeletonised
- Strap / bracelet
- NATO textile strap
- Water resistance
- 300 m
- Limited-edition status
- Regular production, not a limited edition
Case, dial & bracelet
- Case dimensions
- 42 mm
- Case thickness
- 9.4 mm
- Case material
- Carbon TPT
- Bezel
- Baguette diamond rainbow
- Crystal
- Anti-reflective sapphire, double-domed
- Dial
- Skeletonised
- Hands
- Mercedes hour hand with Chromalight display
- Indexes
- Applied Arabic numerals with luminous coating
- Bracelet / strap
- NATO textile strap
- Clasp / buckle
- Pin buckle in matching case metal
- Water resistance
- 300 m
Movement
- Movement / calibre
- Calibre 23F — In-house automatic micro-rotor
- Movement type
- Automatic, self-winding
- Frequency
- 21,600 vph (3 Hz)
- Power reserve
- 72 hours
- Number of jewels
- 33 jewels
- Complications
- Chronograph
- Functions
- Chronograph, tachymeter, date
- Watchmaker
- The calibre is built in-house and adjusted in five positions before delivery.
Production & market
- Production period
- 1986 – 2000
- Limited-edition quantity
- Not applicable
- Current market information
- Values have stabilised after the 2022 correction; condition and box-and-papers drive the premium.
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
Jacob & Co. Astronomia 42 mm Skeletonised Carbon sits within Jacob & Co.'s Astronomia line, introduced in 1986. It carries the house codes established since 1986 — carbon tpt case, skeletonised dial and in-house automatic micro-rotor — 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
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
1986
Jacob Arabo founds Jacob & Co. in United States.
1990
Jacob & Co. enters the modern collector market with its signature lines.
2024
Jacob & Co. continues to produce Astronomia, Billionaire, Bugatti Chiron and other icons in limited numbers.