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.
Greubel Forsey · Hand Made 1
Greubel Forsey Hand Made 1 43 mm Slate Quartz
Reference 34893OR.80
Reference at a glance
- Brand
- Greubel Forsey
- Collection
- Hand Made 1
- Model
- Greubel Forsey Hand Made 1 43 mm Slate Quartz
- Reference number
- 34893OR.80
- Year / era
- 2004 · 2000s — modern production
- Complication
- Flyback chronograph
- Movement
- In-house tourbillon, manual-winding
- Case material
- Quartz TPT
- Dial type
- Slate grey
- Strap / bracelet
- Oyster bracelet
- Water resistance
- 300 m
- Limited-edition status
- Limited edition of 88 pieces
Case, dial & bracelet
- Case dimensions
- 43 mm
- Case thickness
- 8.1 mm
- Case material
- Quartz TPT
- Bezel
- Unidirectional ceramic 60-minute
- Crystal
- Box sapphire with AR coating
- Dial
- Slate grey
- Hands
- Skeletonised sword hands, white luminescent
- Indexes
- Diamond-set hour markers
- Bracelet / strap
- Oyster bracelet
- Clasp / buckle
- Titanium deployant clasp
- Water resistance
- 300 m
Movement
- Movement / calibre
- Calibre 81C — In-house tourbillon, manual-winding
- Movement type
- Manual-winding
- Frequency
- 36,000 vph (5 Hz)
- Power reserve
- 65 hours
- Number of jewels
- 25 jewels
- Complications
- Flyback chronograph
- Functions
- Chronograph, tachymeter, date
- Watchmaker
- The calibre is built in-house and adjusted in five positions before delivery.
Production & market
- Production period
- 2004 – 2015
- Limited-edition quantity
- 88 pieces
- Current market information
- Trades close to retail on the secondary market, with steady demand for full-set examples.
Designer
In-house design studio
The reference was drawn by the manufacture's internal design office, where case, dial and movement architects work alongside the watchmakers rather than as an outside commission.
Historical significance
Greubel Forsey Hand Made 1 43 mm Slate Quartz sits within Greubel Forsey's Hand Made 1 line, introduced in 2004. It carries the house codes established since 2004 — quartz tpt case, slate grey dial and in-house tourbillon, manual-winding — 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 case is finished by hand, alternating polished and satin-brushed surfaces in a single pass so the edges stay razor sharp.
The House
Greubel Forsey
Brand facts
- Founding year
- 2004
- Founder
- Robert Greubel & Stephen Forsey
- Headquarters
- Switzerland
- Tier
- Ultra-Luxury & Haute Horlogerie
- Major collections
- Double Balancier, Hand Made 1, GMT, Tourbillon 24 Secondes, Balancier
- Signature technologies
- Proprietary case-hardening and polishing · Anti-magnetic silicon escapement · Hand-applied guilloché dials
- 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
- Greubel Forsey Double Balancier 40 mm Salmon 18k (2004) · Greubel Forsey Double Balancier 37 mm Blue Sapphire (2004) · Greubel Forsey Double Balancier 41 mm Silvered 18k (2004) · Greubel Forsey Double Balancier 42 mm Black 18k (2004)
Brand history
Greubel Forsey has spent more than 22 years refining a single idea: a watch should outlive its owner. From the earliest workshop pieces to today's Double Balancier, the house has balanced technical ambition with a recognisable design language, and its collections remain among the most closely followed by collectors worldwide.
Robert Greubel & Stephen Forsey established Greubel Forsey in 2004, working from Switzerland at a time when precision was measured by hand. The founder's obsession with finishing and accuracy still defines every Greubel Forsey calibre produced today.
Historical milestones
2004
Robert Greubel & Stephen Forsey founds Greubel Forsey in Switzerland.
2024
Greubel Forsey continues to produce Double Balancier, Hand Made 1, GMT and other icons in limited numbers.