F.P. Journe
F.P. Journe Chronomètre Optimum (40 or 42 mm) CO
The F.P. Journe Chronomètre Optimum (40 or 42 mm) (reference CO) is a 40 mm platinum / 18k rose gold (6N) watch. It runs on the manual caliber 1510 with a 70-hour power reserve. It was introduced in 2012 and is still in production.
Specifications
Case
- Reference
- CO
- Collection
- Souveraine
- Case size
- 40 mm
- Thickness
- 9.5 mm
- Case material
- Platinum / 18k rose gold (6N)
- Case shape
- Round
- Crystal
- Sapphire
- Bracelet / strap
- Alligator leather / Platinum or gold bracelet strap
Movement
- Movement
- Manual
- Caliber
- 1510
- Power reserve
- 70 hours
- Frequency
- 21,600 vph
- Jewels
- 44
- Functions
- Small seconds, Power reserve indicator, Other
Production
- Production
- 2012 – today (current)
How it compares within the Souveraine family
Side by side with other references in the same collection, from the catalog.
| Reference | Size | Material | Dial | Caliber | Years |
|---|---|---|---|---|---|
| CO (This watch) | 40 mm | Platinum / 18k rose gold (6N) | — | 1510 | 2012– |
| AL2 | 40 mm | Platinum / 18k rose gold (6N) | Silver / Havana | 1300.3 | — |
| AST | 44 mm | Stainless steel | — | 1619 | — |
| CB | 39 mm | Tantalum | Blue | 1304 | 2009– |
| CS | 40 mm | Platinum / 18k rose gold (6N) | Silver / Havana | 1304 | 2005– |
| DN | 40 mm | Platinum / 18k rose gold (6N) | Silver | 1300.3 | — |
| FFC | 42 mm | Platinum / 18k rose gold (6N) | — | 1300.3 | 2021– |
| RQ | 40 mm | Platinum / 18k rose gold (6N) | White / 5N gold | 1520 | 2020– |
| TV | 42 mm | Platinum / 18k rose gold (6N) | — | 1519 | 2019– |
About the Souveraine family
Souveraine is F.P. Journe's line of chronometers and complications that began with the Tourbillon Souverain of 1999. It includes the Chronomètre à Résonance, in which two balances running side by side tend to synchronise with each other, the Chronomètre Souverain, the Répétition Souveraine minute repeater and other complicated pieces.
Cases are in platinum, red gold and combinations, with calibers such as the 1304 and 1408 in the catalog. Because many models were made in small numbers and with several dial variants, dealers check the movement material, the dial and the certificate with care.
Quick answers
- What size is the F.P. Journe Chronomètre Optimum (40 or 42 mm) CO?
- The F.P. Journe Chronomètre Optimum (40 or 42 mm) CO has a 40 mm case, 9.5 mm thick.
- What movement does the F.P. Journe Chronomètre Optimum (40 or 42 mm) CO use?
- It uses the manual caliber 1510, with a 70-hour power reserve.
- Is the F.P. Journe Chronomètre Optimum (40 or 42 mm) CO still in production?
- Yes, it is a current reference.
- When did the F.P. Journe Chronomètre Optimum (40 or 42 mm) CO come out?
- It was introduced in 2012.
- What is the F.P. Journe Chronomètre Optimum (40 or 42 mm) CO made of?
- The case is platinum / 18k rose gold (6N). Bracelet or strap: Alligator leather / Platinum or gold bracelet strap.
Catalog facts checked September 2026.