| Brand: | Valjoux | 
|
|---|---|---|
| Family: |
Unknown
|
|
| Height: | 7.45 mm | |
| Jewels: | ||
| Reserve: | hours | |
| Frequency: | 18000 A/h | |
| Winding: | Hand winding | |
| Diameter: | 39.30 mm (17.67 ligne) | |
| Complications: | 6-Column Chronograph, Chronograph, Column Wheel Chronograph, Monopusher Chronograph, Split Seconds Chronograph | |
| Hands: | ||
| Production: 1916 – | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1910s | 1920s | 1930s | 1940s | 1950s | 1960s | 1970s | 1980s | 1990s | 2000s | 2010s | 2020s |
Valjoux Cal. 25 is a pocket watch column wheel chronograph movement. Introduced around 1916, it was produced at least through the 1940s. It featured a six-column wheel to control the chronograph function. The chronograph used a central seconds hand with optional split seconds and a 30 minute counter. It was a single-pusher design.