First Series, Flat Lugs
World Time 2523/1 — First Series, Flat Lugs
Undated
Streamlined flat lugs and a plain silvered dial with matte city ring; about 10 made, all five known in yellow gold.
No verified image of this watch yet
Identifying details
- World time
Louis Cottier’s heure universelle display: a 24-hour ring read against the names of cities in all time zones.
Variants of 2523/1
Reference overview →| Variant | Production |
|---|---|
| First Series, Flat LugsCurrent | Undated |
| Second Series, Faceted Lugs | Undated |
Case & movement
- Reference
- 2523/1
- Production
- Undated
- Case material
- 18k yellow gold
- Case diameter
- 36 mm
- Movement
- Manual winding
- Date
- No
- Caliber
- Patek Philippe 12-400 HU
Dial, bezel & hands
Unknown attributes are left out rather than guessed.
Movement
Patek Philippe 12-400 HU
Cottier’s second world-time system on the 12-400: a second crown at 9 turns an inner city disc under the crystal, protecting the city names from wear. Used in the refs. 2523 and 2523/1; Cottier’s monogram and the movement number appear on the main parts.
Manual winding · Introduced 1953 · 18 jewels