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.
IWC Schaffhausen · Aquatimer
IWC Schaffhausen Aquatimer 38 mm Meteorite Grade
Reference 63136OR.46
Reference at a glance
- Brand
- IWC Schaffhausen
- Collection
- Aquatimer
- Model
- IWC Schaffhausen Aquatimer 38 mm Meteorite Grade
- Reference number
- 63136OR.46
- Year / era
- 1979 · 1970s — quartz-crisis era
- Complication
- Minute repeater
- Movement
- In-house manual-winding
- Case material
- Grade 5 titanium
- Dial type
- Meteorite
- Strap / bracelet
- NATO textile strap
- Water resistance
- 200 m
- Limited-edition status
- Regular production, not a limited edition
Case, dial & bracelet
- Case dimensions
- 38 mm
- Case thickness
- 9.4 mm
- Case material
- Grade 5 titanium
- Bezel
- Smooth polished
- Crystal
- Anti-reflective sapphire, double-domed
- Dial
- Meteorite
- Hands
- Skeletonised sword hands, white luminescent
- Indexes
- Diamond-set hour markers
- Bracelet / strap
- NATO textile strap
- Clasp / buckle
- Titanium deployant clasp
- Water resistance
- 200 m
Movement
- Movement / calibre
- Calibre 71D — In-house manual-winding
- Movement type
- Manual-winding
- Frequency
- 21,600 vph (3 Hz)
- Power reserve
- 38 hours
- Number of jewels
- 33 jewels
- Complications
- Minute repeater
- Functions
- Perpetual calendar, leap year
- Watchmaker
- Finishing, assembly and timing are carried out in the manufacture's own atelier.
Production & market
- Production period
- 1979 – 1993
- Limited-edition quantity
- Not applicable
- Current market information
- Values have stabilised after the 2022 correction; condition and box-and-papers drive the premium.
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
IWC Schaffhausen Aquatimer 38 mm Meteorite Grade sits within IWC Schaffhausen's Aquatimer line, introduced in 1979. It carries the house codes established since 1868 — grade 5 titanium case, meteorite dial and in-house manual-winding — 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 bracelet tapers across its length, which is why the profile looks thinner on the wrist than the specification suggests.
- Early production dials show a slightly different minute track, and collectors pay a premium for them.
The House
IWC Schaffhausen
Brand facts
- Founding year
- 1868
- Founder
- Florentine Ariosto Jones
- Headquarters
- Switzerland
- Tier
- Luxury
- Major collections
- Portugieser, Pilot's Watch, Portofino, Ingenieur, Aquatimer, Da Vinci
- Signature technologies
- Proprietary case-hardening and polishing · Shock-absorbing movement mounting · Certified chronometer regulation
- Famous movements
- In-house manual-winding · In-house automatic, Superlative Chronometer · In-house automatic chronograph · In-house automatic, chronometer certified
- Notable watches
- IWC Schaffhausen Portugieser 38 mm Blue 18k (2000) · IWC Schaffhausen Portugieser 40 mm Black Carbon (1962) · IWC Schaffhausen Portugieser 38 mm Silvered 18k (1987) · IWC Schaffhausen Portugieser 36 mm Slate Grade (1991)
Brand history
IWC Schaffhausen has spent more than 158 years refining a single idea: a watch should outlive its owner. From the earliest workshop pieces to today's Portugieser, the house has balanced technical ambition with a recognisable design language, and its collections remain among the most closely followed by collectors worldwide.
Florentine Ariosto Jones established IWC Schaffhausen in 1868, working from Switzerland at a time when precision was measured by hand. The founder's obsession with finishing and accuracy still defines every IWC Schaffhausen calibre produced today.
Historical milestones
1868
Florentine Ariosto Jones founds IWC Schaffhausen in Switzerland.
1899
IWC Schaffhausen earns its first international recognition for precision timekeeping.
1969
The quartz era forces IWC Schaffhausen to redefine mechanical watchmaking.
1990
IWC Schaffhausen enters the modern collector market with its signature lines.
2024
IWC Schaffhausen continues to produce Portugieser, Pilot's Watch, Portofino and other icons in limited numbers.