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.
Roger Dubuis · Monovortex
Roger Dubuis Monovortex 43 mm Skeletonised Sapphire
Reference 27995OR.54
Reference at a glance
- Brand
- Roger Dubuis
- Collection
- Monovortex
- Model
- Roger Dubuis Monovortex 43 mm Skeletonised Sapphire
- Reference number
- 27995OR.54
- Year / era
- 2020 · 2020s — modern production
- Complication
- Perpetual calendar
- Movement
- In-house automatic with 22k gold rotor
- Case material
- Sapphire crystal case
- Dial type
- Skeletonised
- Strap / bracelet
- Oyster bracelet
- Water resistance
- 100 m
- Limited-edition status
- Limited edition of 88 pieces
Case, dial & bracelet
- Case dimensions
- 43 mm
- Case thickness
- 12.6 mm
- Case material
- Sapphire crystal case
- Bezel
- Smooth polished
- Crystal
- Anti-reflective sapphire, double-domed
- Dial
- Skeletonised
- Hands
- Blued steel Breguet-style hands
- Indexes
- Applied Arabic numerals with luminous coating
- Bracelet / strap
- Oyster bracelet
- Clasp / buckle
- Folding clasp in matching case metal
- Water resistance
- 100 m
Movement
- Movement / calibre
- Calibre 63A — In-house automatic with 22k gold rotor
- Movement type
- Automatic with micro-rotor
- Frequency
- 25,200 vph (3.5 Hz)
- Power reserve
- 55 hours
- Number of jewels
- 45 jewels
- Complications
- Perpetual calendar
- Functions
- Perpetual calendar, leap year
- Watchmaker
- Finishing, assembly and timing are carried out in the manufacture's own atelier.
Production & market
- Production period
- 2020 – 2031
- Limited-edition quantity
- 88 pieces
- Current market information
- Thin secondary-market supply — pricing is set piece by piece at auction.
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
Roger Dubuis Monovortex 43 mm Skeletonised Sapphire sits within Roger Dubuis's Monovortex line, introduced in 2020. It carries the house codes established since 1995 — sapphire crystal case case, skeletonised 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
- Early production dials show a slightly different minute track, and collectors pay a premium for them.
- 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 House
Roger Dubuis
Brand facts
- Founding year
- 1995
- Founder
- Roger Dubuis & Carlos Dias
- Headquarters
- Switzerland
- Tier
- Ultra-Luxury & Haute Horlogerie
- Major collections
- Excalibur, Excalibur Spider, Velvet, Monovortex, Knights of the Round Table
- Signature technologies
- Hand-applied guilloché dials · In-house hairspring production · Composite and ceramic case materials
- Famous movements
- In-house tourbillon, manual-winding · In-house automatic micro-rotor · In-house automatic with 22k gold rotor · In-house manual-winding, hand-finished
- Notable watches
- Roger Dubuis Excalibur 40 mm Black 18k (1995) · Roger Dubuis Excalibur 43 mm Silvered Sapphire (1995) · Roger Dubuis Excalibur 39 mm Silvered Sapphire (1995) · Roger Dubuis Excalibur 38 mm Blue 18k (1995)
Brand history
Roger Dubuis has spent more than 31 years refining a single idea: a watch should outlive its owner. From the earliest workshop pieces to today's Excalibur, the house has balanced technical ambition with a recognisable design language, and its collections remain among the most closely followed by collectors worldwide.
Roger Dubuis & Carlos Dias established Roger Dubuis in 1995, working from Switzerland at a time when precision was measured by hand. The founder's obsession with finishing and accuracy still defines every Roger Dubuis calibre produced today.
Historical milestones
1995
Roger Dubuis & Carlos Dias founds Roger Dubuis in Switzerland.
2024
Roger Dubuis continues to produce Excalibur, Excalibur Spider, Velvet and other icons in limited numbers.