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.
Hamilton · Ventura
Hamilton Ventura 39 mm Slate Ceramic
Reference 22531OR.73
Reference at a glance
- Brand
- Hamilton
- Collection
- Ventura
- Model
- Hamilton Ventura 39 mm Slate Ceramic
- Reference number
- 22531OR.73
- Year / era
- 2014 · 2010s — modern production
- Complication
- Time only
- Movement
- Automatic, 38-hour reserve
- Case material
- Ceramic
- Dial type
- Slate grey
- Strap / bracelet
- Oyster bracelet
- Water resistance
- 500 m
- Limited-edition status
- Regular production, not a limited edition
Case, dial & bracelet
- Case dimensions
- 39 mm
- Case thickness
- 8.8 mm
- Case material
- Ceramic
- 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
- Folding clasp in matching case metal
- Water resistance
- 500 m
Movement
- Movement / calibre
- Calibre 60A — Automatic, 38-hour reserve
- Movement type
- Automatic, self-winding
- Frequency
- 21,600 vph (3 Hz)
- Power reserve
- 70 hours
- Number of jewels
- 21 jewels
- Complications
- Time only
- Functions
- Chronograph, tachymeter, date
- Watchmaker
- The calibre is built in-house and adjusted in five positions before delivery.
Production & market
- Production period
- 2014 – 2019
- 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
Hamilton Ventura 39 mm Slate Ceramic sits within Hamilton's Ventura line, introduced in 2014. It carries the house codes established since 1892 — ceramic case, slate grey dial and automatic, 38-hour reserve — and is one of the references collectors use to date the evolution of the collection.
Interesting facts
- The case is finished by hand, alternating polished and satin-brushed surfaces in a single pass so the edges stay razor sharp.
- The reference was originally planned as a one-year run and stayed in the catalogue for well over a decade.
- Early production dials show a slightly different minute track, and collectors pay a premium for them.
The House
Hamilton
Brand facts
- Founding year
- 1892
- Founder
- Adam Bopst & Charles Rood
- Headquarters
- United States
- Tier
- Affordable & Tool Watches
- Major collections
- Khaki Field, Khaki Navy, Jazzmaster, Ventura, American Classic
- Signature technologies
- In-house hairspring production · Composite and ceramic case materials · Anti-magnetic silicon escapement
- Famous movements
- Automatic COSC chronometer · Quartz · Automatic Powermatic 80 · Automatic, 38-hour reserve
- Notable watches
- Hamilton Khaki Field 37 mm Blue Carbon (1976) · Hamilton Khaki Field 44 mm Salmon Grade (1952) · Hamilton Khaki Field 37 mm Mother-of-pearl Sapphire (1982) · Hamilton Khaki Field 37 mm Meteorite Stainless (1985)
Brand history
Hamilton has spent more than 134 years refining a single idea: a watch should outlive its owner. From the earliest workshop pieces to today's Khaki Field, the house has balanced technical ambition with a recognisable design language, and its collections remain among the most closely followed by collectors worldwide.
Adam Bopst & Charles Rood established Hamilton in 1892, working from United States at a time when precision was measured by hand. The founder's obsession with finishing and accuracy still defines every Hamilton calibre produced today.
Historical milestones
1892
Adam Bopst & Charles Rood founds Hamilton in United States.
1899
Hamilton earns its first international recognition for precision timekeeping.
1969
The quartz era forces Hamilton to redefine mechanical watchmaking.
1990
Hamilton enters the modern collector market with its signature lines.
2024
Hamilton continues to produce Khaki Field, Khaki Navy, Jazzmaster and other icons in limited numbers.