All Girard-Perregaux
Girard-Perregaux Casquette 41 mm Slate Quartz
Front view

Front view

Dial, hands and bezel as delivered.

Case-back view

Case-back view

Case-back engraving and, where fitted, the sapphire display.

Movement

Movement

Calibre with its finishing and decoration.

On the wrist

On the wrist

Worn shot for proportion and strap drape.

Girard-Perregaux · Casquette

Girard-Perregaux Casquette 41 mm Slate Quartz

Reference 25506OR.79

Reference at a glance

Brand
Girard-Perregaux
Collection
Casquette
Model
Girard-Perregaux Casquette 41 mm Slate Quartz
Reference number
25506OR.79
Year / era
2000 · 2000s — modern production
Complication
GMT / second time zone
Movement
In-house automatic, Superlative Chronometer
Case material
Quartz TPT
Dial type
Slate grey
Strap / bracelet
Alligator leather with folding clasp
Water resistance
200 m
Limited-edition status
Limited edition of 100 pieces
Compare this reference

Case, dial & bracelet

Case dimensions
41 mm
Case thickness
11.3 mm
Case material
Quartz TPT
Bezel
Fixed brushed titanium
Crystal
Sapphire with internal AR treatment
Dial
Slate grey
Hands
Rhodium-plated baton hands with luminous fill
Indexes
Applied faceted white-gold indexes
Bracelet / strap
Alligator leather with folding clasp
Clasp / buckle
Pin buckle in matching case metal
Water resistance
200 m

Movement

Movement / calibre
Calibre 2E — In-house automatic, Superlative Chronometer
Movement type
Automatic, self-winding
Frequency
36,000 vph (5 Hz)
Power reserve
70 hours
Number of jewels
45 jewels
Complications
GMT / second time zone
Functions
Dive time, running seconds
Watchmaker
Finishing, assembly and timing are carried out in the manufacture's own atelier.

Production & market

Production period
2000 – 2011
Limited-edition quantity
100 pieces
Current market information
Thin secondary-market supply — pricing is set piece by piece at auction.

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

Girard-Perregaux Casquette 41 mm Slate Quartz sits within Girard-Perregaux's Casquette line, introduced in 2000. It carries the house codes established since 1791 — quartz tpt case, slate grey dial and in-house automatic, superlative chronometer — and is one of the references collectors use to date the evolution of the collection.

Interesting facts

  • The movement's bridges are decorated even where they will never be seen once the watch is cased.
  • The reference was originally planned as a one-year run and stayed in the catalogue for well over a decade.
GI

The House

Girard-Perregaux

Brand facts

Founding year
1791
Founder
Jean-François Bautte
Headquarters
Switzerland
Tier
Luxury
Major collections
Laureato, Three Bridges, Free Bridge, Vintage 1945, Casquette
Signature technologies
In-house hairspring production · Anti-magnetic silicon escapement · Certified chronometer regulation
Famous movements
In-house manual-winding · In-house automatic, Superlative Chronometer · In-house automatic, chronometer certified · In-house automatic chronograph
Notable watches
Girard-Perregaux Laureato 39 mm Green Carbon (1964) · Girard-Perregaux Laureato 39 mm Green Stainless (1985) · Girard-Perregaux Laureato 43 mm Mother-of-pearl 18k (1956) · Girard-Perregaux Laureato 37 mm Meteorite Quartz (1987)

Brand history

Girard-Perregaux has spent more than 235 years refining a single idea: a watch should outlive its owner. From the earliest workshop pieces to today's Laureato, the house has balanced technical ambition with a recognisable design language, and its collections remain among the most closely followed by collectors worldwide.

Jean-François Bautte established Girard-Perregaux in 1791, working from Switzerland at a time when precision was measured by hand. The founder's obsession with finishing and accuracy still defines every Girard-Perregaux calibre produced today.

Historical milestones

  1. 1791

    Jean-François Bautte founds Girard-Perregaux in Switzerland.

  2. 1831

    Girard-Perregaux earns its first international recognition for precision timekeeping.

  3. 1969

    The quartz era forces Girard-Perregaux to redefine mechanical watchmaking.

  4. 1990

    Girard-Perregaux enters the modern collector market with its signature lines.

  5. 2024

    Girard-Perregaux continues to produce Laureato, Three Bridges, Free Bridge and other icons in limited numbers.

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