Casio
Casio Edifice 41 mm Silvered Sapphire
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.
Casio · Edifice
Casio Edifice 41 mm Silvered Sapphire
Reference 20544OR.39
Reference at a glance
- Brand
- Casio
- Collection
- Edifice
- Model
- Casio Edifice 41 mm Silvered Sapphire
- Reference number
- 20544OR.39
- Year / era
- 1981 · 1980s — quartz-crisis era
- Complication
- Annual calendar
- Movement
- Spring Drive
- Case material
- Sapphire crystal case
- Dial type
- Silvered opaline
- Strap / bracelet
- Milanese mesh
- Water resistance
- 100 m
- Limited-edition status
- Regular production, not a limited edition
Case, dial & bracelet
- Case dimensions
- 41 mm
- Case thickness
- 12.6 mm
- Case material
- Sapphire crystal case
- Bezel
- Unidirectional ceramic 60-minute
- Crystal
- Sapphire with internal AR treatment
- Dial
- Silvered opaline
- Hands
- Mercedes hour hand with Chromalight display
- Indexes
- Applied Arabic numerals with luminous coating
- Bracelet / strap
- Milanese mesh
- Clasp / buckle
- Pin buckle in matching case metal
- Water resistance
- 100 m
Movement
- Movement / calibre
- Calibre 13F — Spring Drive
- Movement type
- Automatic with micro-rotor
- Frequency
- 28,800 vph (4 Hz)
- Power reserve
- 70 hours
- Number of jewels
- 27 jewels
- Complications
- Annual calendar
- Functions
- Hours, minutes, seconds, date
- Watchmaker
- Finishing, assembly and timing are carried out in the manufacture's own atelier.
Production & market
- Production period
- 1981 – 1991
- Limited-edition quantity
- Not applicable
- Current market information
- Consistently trades above retail; waiting lists at authorised dealers remain long.
Designer
Gérald Genta
Gérald Genta (1931–2011) trained as a goldsmith in Geneva and became the most influential watch designer of the 20th century. Working freelance, he sketched the Audemars Piguet Royal Oak overnight in 1970, followed by the Patek Philippe Nautilus, the IWC Ingenieur SL and the Bulgari Bulgari — defining the integrated-bracelet luxury sports watch as a category.
Historical significance
Casio Edifice 41 mm Silvered Sapphire sits within Casio's Edifice line, introduced in 1981. It carries the house codes established since 1946 — sapphire crystal case case, silvered opaline dial and spring drive — 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.
- The reference was originally planned as a one-year run and stayed in the catalogue for well over a decade.
The House
Casio
Brand facts
- Founding year
- 1946
- Founder
- Tadao Kashio
- Headquarters
- Japan
- Tier
- Japanese
- Major collections
- G-Shock, Edifice, Oceanus, Pro Trek, Vintage
- Signature technologies
- In-house hairspring production · Shock-absorbing movement mounting
- Famous movements
- Spring Drive · Eco-Drive solar quartz · Automatic, 24 jewels · High-accuracy quartz
- Notable watches
- Casio G-Shock 39 mm Blue 18k (1998) · Casio G-Shock 42 mm Black Ceramic (2002) · Casio G-Shock 43 mm Salmon 18k (1985) · Casio G-Shock 42 mm Silvered Sapphire (2004)
Brand history
Casio has spent more than 80 years refining a single idea: a watch should outlive its owner. From the earliest workshop pieces to today's G-Shock, the house has balanced technical ambition with a recognisable design language, and its collections remain among the most closely followed by collectors worldwide.
Tadao Kashio established Casio in 1946, working from Japan at a time when precision was measured by hand. The founder's obsession with finishing and accuracy still defines every Casio calibre produced today.
Historical milestones
1946
Tadao Kashio founds Casio in Japan.
1969
The quartz era forces Casio to redefine mechanical watchmaking.
1990
Casio enters the modern collector market with its signature lines.
2024
Casio continues to produce G-Shock, Edifice, Oceanus and other icons in limited numbers.