Minase
Minase Five Windows 36 mm Slate 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.
Minase · Five Windows
Minase Five Windows 36 mm Slate Carbon
Reference 19501OR.18
Reference at a glance
- Brand
- Minase
- Collection
- Five Windows
- Model
- Minase Five Windows 36 mm Slate Carbon
- Reference number
- 19501OR.18
- Year / era
- 2005 · 2000s — modern production
- Complication
- Annual calendar
- Movement
- Spring Drive
- Case material
- Carbon TPT
- Dial type
- Slate grey
- Strap / bracelet
- Rubber strap with titanium clasp
- Water resistance
- 500 m
- Limited-edition status
- Limited edition of 250 pieces
Case, dial & bracelet
- Case dimensions
- 36 mm
- Case thickness
- 12.6 mm
- Case material
- Carbon TPT
- Bezel
- Fixed brushed titanium
- Crystal
- Box sapphire with AR coating
- Dial
- Slate grey
- Hands
- Skeletonised sword hands, white luminescent
- Indexes
- Diamond-set hour markers
- Bracelet / strap
- Rubber strap with titanium clasp
- Clasp / buckle
- Triple-folding clasp with safety catch
- Water resistance
- 500 m
Movement
- Movement / calibre
- Calibre 87C — Spring Drive
- Movement type
- Manual-winding
- Frequency
- 36,000 vph (5 Hz)
- Power reserve
- 65 hours
- Number of jewels
- 25 jewels
- Complications
- Annual calendar
- Functions
- Chronograph, tachymeter, date
- Watchmaker
- Finishing, assembly and timing are carried out in the manufacture's own atelier.
Production & market
- Production period
- 2005 – 2018
- Limited-edition quantity
- 250 pieces
- 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
Minase Five Windows 36 mm Slate Carbon sits within Minase's Five Windows line, introduced in 2005. It carries the house codes established since 2005 — carbon tpt case, slate grey 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 reference was originally planned as a one-year run and stayed in the catalogue for well over a decade.
- The movement's bridges are decorated even where they will never be seen once the watch is cased.
The House
Minase
Brand facts
- Founding year
- 2005
- Founder
- Kyowa Co. / Susumu Kitamura
- Headquarters
- Japan
- Tier
- Japanese
- Major collections
- Divido, Five Windows, Horizon, Masterpiece
- Signature technologies
- In-house hairspring production · Proprietary case-hardening and polishing
- Famous movements
- Automatic, 24 jewels · Eco-Drive solar quartz · High-accuracy quartz · Spring Drive
- Notable watches
- Minase Divido (2000) · Minase Horizon (2001) · Minase Uruga (2002)
Brand history
Minase has spent more than 21 years refining a single idea: a watch should outlive its owner. From the earliest workshop pieces to today's Divido, the house has balanced technical ambition with a recognisable design language, and its collections remain among the most closely followed by collectors worldwide.
Kyowa Co. / Susumu Kitamura established Minase in 2005, working from Japan at a time when precision was measured by hand. The founder's obsession with finishing and accuracy still defines every Minase calibre produced today.
Historical milestones
2005
Kyowa Co. / Susumu Kitamura founds Minase in Japan.
2024
Minase continues to produce Divido, Five Windows, Horizon and other icons in limited numbers.