Yema
Yema Navygraf 40 mm Slate Platinum
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.
Yema · Navygraf
Yema Navygraf 40 mm Slate Platinum
Reference 62513OR.52
Reference at a glance
- Brand
- Yema
- Collection
- Navygraf
- Model
- Yema Navygraf 40 mm Slate Platinum
- Reference number
- 62513OR.52
- Year / era
- 2013 · 2010s — modern production
- Complication
- Perpetual calendar
- Movement
- Quartz
- Case material
- Platinum 950
- Dial type
- Slate grey
- Strap / bracelet
- White rubber velcro strap
- Water resistance
- 100 m
- Limited-edition status
- Limited edition of 100 pieces
Case, dial & bracelet
- Case dimensions
- 40 mm
- Case thickness
- 10.2 mm
- Case material
- Platinum 950
- Bezel
- Emerald-set
- Crystal
- Flat sapphire with Cyclops lens
- Dial
- Slate grey
- Hands
- Skeletonised sword hands, white luminescent
- Indexes
- Diamond-set hour markers
- Bracelet / strap
- White rubber velcro strap
- Clasp / buckle
- Pin buckle in matching case metal
- Water resistance
- 100 m
Movement
- Movement / calibre
- Calibre 69C — Quartz
- Movement type
- Automatic, self-winding
- Frequency
- 21,600 vph (3 Hz)
- Power reserve
- 38 hours
- Number of jewels
- 27 jewels
- Complications
- Perpetual calendar
- Functions
- Hours, minutes, seconds, date
- Watchmaker
- Assembled and regulated by a single watchmaker, who signs off the piece before casing.
Production & market
- Production period
- 2013 – 2026
- Limited-edition quantity
- 100 pieces
- Current market information
- Consistently trades above retail; waiting lists at authorised dealers remain long.
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
Yema Navygraf 40 mm Slate Platinum sits within Yema's Navygraf line, introduced in 2013. It carries the house codes established since 1948 — platinum 950 case, slate grey dial and quartz — and is one of the references collectors use to date the evolution of the collection.
Interesting facts
- The reference was originally planned as a one-year run and stayed in the catalogue for well over a decade.
- The case is finished by hand, alternating polished and satin-brushed surfaces in a single pass so the edges stay razor sharp.
The House
Yema
Brand facts
- Founding year
- 1948
- Founder
- Henry Louis Belmont
- Headquarters
- France
- Tier
- Affordable & Tool Watches
- Major collections
- Superman, Navygraf, Wristmaster, Rallygraf
- Signature technologies
- Shock-absorbing movement mounting · In-house hairspring production · Certified chronometer regulation
- Famous movements
- Automatic, 38-hour reserve · Automatic Powermatic 80 · Quartz · Automatic COSC chronometer
- Notable watches
- Yema Superman 41 mm Ice 18k (1952) · Yema Superman 40 mm Ice Sapphire (1976) · Yema Superman 39 mm Green Stainless (1983) · Yema Superman 37 mm Meteorite Stainless (1961)
Brand history
Yema has spent more than 78 years refining a single idea: a watch should outlive its owner. From the earliest workshop pieces to today's Superman, the house has balanced technical ambition with a recognisable design language, and its collections remain among the most closely followed by collectors worldwide.
Henry Louis Belmont established Yema in 1948, working from France at a time when precision was measured by hand. The founder's obsession with finishing and accuracy still defines every Yema calibre produced today.
Historical milestones
1948
Henry Louis Belmont founds Yema in France.
1969
The quartz era forces Yema to redefine mechanical watchmaking.
1990
Yema enters the modern collector market with its signature lines.
2024
Yema continues to produce Superman, Navygraf, Wristmaster and other icons in limited numbers.