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.
Louis Moinet · Memoris
Louis Moinet Memoris 43 mm Slate Sapphire
Reference 61763OR.95
Reference at a glance
- Brand
- Louis Moinet
- Collection
- Memoris
- Model
- Louis Moinet Memoris 43 mm Slate Sapphire
- Reference number
- 61763OR.95
- Year / era
- 1978 · 1970s — quartz-crisis era
- Complication
- Tourbillon
- Movement
- Satellite-hour automatic
- Case material
- Sapphire crystal case
- Dial type
- Slate grey
- Strap / bracelet
- Alligator leather with folding clasp
- Water resistance
- 50 m
- Limited-edition status
- Regular production, not a limited edition
Case, dial & bracelet
- Case dimensions
- 43 mm
- Case thickness
- 8.8 mm
- Case material
- Sapphire crystal case
- Bezel
- Baguette diamond rainbow
- Crystal
- Anti-reflective sapphire, double-domed
- Dial
- Slate grey
- Hands
- Skeletonised sword hands, white luminescent
- Indexes
- Applied Roman numerals
- Bracelet / strap
- Alligator leather with folding clasp
- Clasp / buckle
- Folding clasp in matching case metal
- Water resistance
- 50 m
Movement
- Movement / calibre
- Calibre 45F — Satellite-hour automatic
- Movement type
- Automatic with micro-rotor
- Frequency
- 25,200 vph (3.5 Hz)
- Power reserve
- 70 hours
- Number of jewels
- 45 jewels
- Complications
- Tourbillon
- Functions
- Flying tourbillon, power reserve
- Watchmaker
- Finishing, assembly and timing are carried out in the manufacture's own atelier.
Production & market
- Production period
- 1978 – 1982
- Limited-edition quantity
- Not applicable
- Current market information
- Thin secondary-market supply — pricing is set piece by piece at auction.
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
Louis Moinet Memoris 43 mm Slate Sapphire sits within Louis Moinet's Memoris line, introduced in 1978. It carries the house codes established since 1806 — sapphire crystal case case, slate grey dial and satellite-hour automatic — 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.
- Early production dials show a slightly different minute track, and collectors pay a premium for them.
- The reference was originally planned as a one-year run and stayed in the catalogue for well over a decade.
The House
Louis Moinet
Brand facts
- Founding year
- 1806
- Founder
- Louis Moinet
- Headquarters
- Switzerland
- Tier
- Swiss & Independent
- Major collections
- Memoris, Space Revolution, Impulsion, Cosmopolis
- Signature technologies
- Certified chronometer regulation · In-house hairspring production · Proprietary case-hardening and polishing
- Famous movements
- Satellite-hour automatic · Manual-winding, hand-finished · Micro-rotor automatic · In-house automatic
- Notable watches
- Louis Moinet Memoris 38 mm Skeletonised Carbon (1958) · Louis Moinet Memoris 44 mm Mother-of-pearl Quartz (1987) · Louis Moinet Memoris 41 mm Blue Sapphire (1951) · Louis Moinet Memoris 43 mm Slate Sapphire (1978)
Brand history
Louis Moinet has spent more than 220 years refining a single idea: a watch should outlive its owner. From the earliest workshop pieces to today's Memoris, the house has balanced technical ambition with a recognisable design language, and its collections remain among the most closely followed by collectors worldwide.
Louis Moinet established Louis Moinet in 1806, working from Switzerland at a time when precision was measured by hand. The founder's obsession with finishing and accuracy still defines every Louis Moinet calibre produced today.
Historical milestones
1806
Louis Moinet founds Louis Moinet in Switzerland.
1846
Louis Moinet earns its first international recognition for precision timekeeping.
1969
The quartz era forces Louis Moinet to redefine mechanical watchmaking.
1990
Louis Moinet enters the modern collector market with its signature lines.
2024
Louis Moinet continues to produce Memoris, Space Revolution, Impulsion and other icons in limited numbers.