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.
Corum · Coin Watch
Corum Coin Watch 39 mm Silvered Stainless
Reference 55489ST.18
Reference at a glance
- Brand
- Corum
- Collection
- Coin Watch
- Model
- Corum Coin Watch 39 mm Silvered Stainless
- Reference number
- 55489ST.18
- Year / era
- 2004 · 2000s — modern production
- Complication
- GMT / second time zone
- Movement
- High-beat automatic
- Case material
- Stainless steel
- Dial type
- Silvered opaline
- Strap / bracelet
- Oyster bracelet
- Water resistance
- 30 m
- Limited-edition status
- Regular production, not a limited edition
Case, dial & bracelet
- Case dimensions
- 39 mm
- Case thickness
- 12.6 mm
- Case material
- Stainless steel
- Bezel
- Octagonal with 8 hexagonal screws
- Crystal
- Anti-reflective sapphire, double-domed
- Dial
- Silvered opaline
- Hands
- Skeletonised sword hands, white luminescent
- Indexes
- Diamond-set hour markers
- Bracelet / strap
- Oyster bracelet
- Clasp / buckle
- Pin buckle in matching case metal
- Water resistance
- 30 m
Movement
- Movement / calibre
- Calibre 83A — High-beat automatic
- Movement type
- Automatic, self-winding
- Frequency
- 21,600 vph (3 Hz)
- Power reserve
- 38 hours
- Number of jewels
- 21 jewels
- Complications
- GMT / second time zone
- Functions
- Hours, minutes, small seconds
- Watchmaker
- Finishing, assembly and timing are carried out in the manufacture's own atelier.
Production & market
- Production period
- 2004 – 2013
- Limited-edition quantity
- Not applicable
- 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
Corum Coin Watch 39 mm Silvered Stainless sits within Corum's Coin Watch line, introduced in 2004. It carries the house codes established since 1955 — stainless steel case, silvered opaline dial and high-beat automatic — 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
Corum
Brand facts
- Founding year
- 1955
- Founder
- René Bannwart
- Headquarters
- Switzerland
- Tier
- Premium
- Major collections
- Admiral, Bubble, Golden Bridge, Coin Watch
- Signature technologies
- In-house hairspring production · Anti-magnetic silicon escapement
- Famous movements
- Spring Drive · Automatic, Swiss lever escapement · Automatic chronograph · High-beat automatic
- Notable watches
- Corum Admiral 39 mm Salmon Carbon (1959) · Corum Admiral 42 mm Green Platinum (2000) · Corum Admiral 36 mm Blue Sapphire (1989) · Corum Admiral 37 mm Blue 18k (1957)
Brand history
Corum has spent more than 71 years refining a single idea: a watch should outlive its owner. From the earliest workshop pieces to today's Admiral, the house has balanced technical ambition with a recognisable design language, and its collections remain among the most closely followed by collectors worldwide.
René Bannwart established Corum in 1955, working from Switzerland at a time when precision was measured by hand. The founder's obsession with finishing and accuracy still defines every Corum calibre produced today.
Historical milestones
1955
René Bannwart founds Corum in Switzerland.
1969
The quartz era forces Corum to redefine mechanical watchmaking.
1990
Corum enters the modern collector market with its signature lines.
2024
Corum continues to produce Admiral, Bubble, Golden Bridge and other icons in limited numbers.