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 39 mm Silvered Sapphire
Reference 47384OR.96
Reference at a glance
- Brand
- Jacob & Co.
- Collection
- Astronomia
- Model
- Jacob & Co. Astronomia 39 mm Silvered Sapphire
- Reference number
- 47384OR.96
- Year / era
- 2022 · 2020s — modern production
- Complication
- Perpetual calendar
- Movement
- In-house automatic with 22k gold rotor
- Case material
- Sapphire crystal case
- Dial type
- Silvered opaline
- Strap / bracelet
- Jubilee bracelet
- Water resistance
- 500 m
- Limited-edition status
- Limited edition of 500 pieces
Case, dial & bracelet
- Case dimensions
- 39 mm
- Case thickness
- 9.4 mm
- Case material
- Sapphire crystal case
- Bezel
- Baguette diamond rainbow
- Crystal
- Box sapphire with AR coating
- Dial
- Silvered opaline
- Hands
- Blued steel Breguet-style hands
- Indexes
- Diamond-set hour markers
- Bracelet / strap
- Jubilee bracelet
- Clasp / buckle
- Pin buckle in matching case metal
- Water resistance
- 500 m
Movement
- Movement / calibre
- Calibre 29C — In-house automatic with 22k gold rotor
- Movement type
- Automatic, self-winding
- Frequency
- 21,600 vph (3 Hz)
- Power reserve
- 55 hours
- Number of jewels
- 21 jewels
- Complications
- Perpetual calendar
- Functions
- Flying tourbillon, power reserve
- Watchmaker
- Finishing, assembly and timing are carried out in the manufacture's own atelier.
Production & market
- Production period
- 2022 – 2027
- Limited-edition quantity
- 500 pieces
- Current market information
- Trades close to retail on the secondary market, with steady demand for full-set examples.
Designer
Emmanuel Gueit
Emmanuel Gueit came from a family of Geneva jewellers and was barely into his twenties when he drew the oversized Royal Oak Offshore in 1993 — a watch the house's traditionalists resisted and collectors turned into an icon.
Historical significance
Jacob & Co. Astronomia 39 mm Silvered Sapphire sits within Jacob & Co.'s Astronomia line, introduced in 2022. It carries the house codes established since 1986 — sapphire crystal case case, silvered opaline dial and in-house automatic with 22k gold rotor — and is one of the references collectors use to date the evolution of the collection.
Interesting facts
- The movement's bridges are decorated even where they will never be seen once the watch is cased.
- The bracelet tapers across its length, which is why the profile looks thinner on the wrist than the specification suggests.
- The reference was originally planned as a one-year run and stayed in the catalogue for well over a decade.
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.