Fortis
Fortis Marinemaster 37 mm Black Carbon
Photography on request
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.
Fortis · Marinemaster
Fortis Marinemaster 37 mm Black Carbon
Reference 97541OR.36
Reference at a glance
- Brand
- Fortis
- Collection
- Marinemaster
- Model
- Fortis Marinemaster 37 mm Black Carbon
- Reference number
- 97541OR.36
- Year / era
- 1991 · 1990s — mechanical revival
- Complication
- Chronograph
- Movement
- Automatic Powermatic 80
- Case material
- Carbon TPT
- Dial type
- Black lacquer
- Strap / bracelet
- Milanese mesh
- Water resistance
- 100 m
- Limited-edition status
- Regular production, not a limited edition
Case, dial & bracelet
- Case dimensions
- 37 mm
- Case thickness
- 10.2 mm
- Case material
- Carbon TPT
- Bezel
- Fixed brushed titanium
- Crystal
- Sapphire with internal AR treatment
- Dial
- Black lacquer
- Hands
- Rhodium-plated baton hands with luminous fill
- Indexes
- Applied faceted white-gold indexes
- Bracelet / strap
- Milanese mesh
- Clasp / buckle
- Titanium deployant clasp
- Water resistance
- 100 m
Movement
- Movement / calibre
- Calibre 7F — Automatic Powermatic 80
- Movement type
- High-frequency automatic
- Frequency
- 28,800 vph (4 Hz)
- Power reserve
- 45 hours
- Number of jewels
- 21 jewels
- Complications
- Chronograph
- Functions
- GMT second time zone, date
- Watchmaker
- Finishing, assembly and timing are carried out in the manufacture's own atelier.
Production & market
- Production period
- 1991 – 1999
- Limited-edition quantity
- Not applicable
- Current market information
- Trades close to retail on the secondary market, with steady demand for full-set examples.
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
Fortis Marinemaster 37 mm Black Carbon sits within Fortis's Marinemaster line, introduced in 1991. It carries the house codes established since 1912 — carbon tpt case, black lacquer dial and automatic powermatic 80 — 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 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
Fortis
Brand facts
- Founding year
- 1912
- Founder
- Walter Vogt
- Headquarters
- Switzerland
- Tier
- Affordable & Tool Watches
- Major collections
- Flieger, Marinemaster, Stratoliner, Novonaut
- Signature technologies
- Shock-absorbing movement mounting · Certified chronometer regulation · Hand-applied guilloché dials
- Famous movements
- Automatic COSC chronometer · Automatic, 38-hour reserve · Automatic Powermatic 80 · Quartz
- Notable watches
- Fortis Flieger 43 mm Silvered Sapphire (1970) · Fortis Flieger 37 mm Green Grade (1978) · Fortis Flieger 42 mm Silvered 18k (1966) · Fortis Flieger 38 mm Meteorite Grade (1974)
Brand history
Fortis has spent more than 114 years refining a single idea: a watch should outlive its owner. From the earliest workshop pieces to today's Flieger, the house has balanced technical ambition with a recognisable design language, and its collections remain among the most closely followed by collectors worldwide.
Walter Vogt established Fortis in 1912, working from Switzerland at a time when precision was measured by hand. The founder's obsession with finishing and accuracy still defines every Fortis calibre produced today.
Historical milestones
1912
Walter Vogt founds Fortis in Switzerland.
1969
The quartz era forces Fortis to redefine mechanical watchmaking.
1990
Fortis enters the modern collector market with its signature lines.
2024
Fortis continues to produce Flieger, Marinemaster, Stratoliner and other icons in limited numbers.