Valjoux 23
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The Valjoux 23 family of chronograph movements was widely used and produced for nearly 60 years.
The Valjoux 23 family is 13 ligne in size (29.5 mm) with a nine-pillar column wheel. It is typically a two-register design, with small seconds at 9:00 and a 30- or 45-minute counter at 3:00. Flyback, calendar, moon phase, and other complications were sometimes offered as well. The well-known Valjoux 72 was a variant with three subdials, adding an hour counter at 6:00.
Family
- 18,000 A/h
- Valjoux 23
- Valjoux 230 - Flyback
- Valjoux 23C - Calendar
- Valjoux 232 - Smaller crown wheel
- Valjoux 72 - Hour counter
- Valjoux 720 - Hour counter, flyback
- Valjoux 72C - Hour counter, calendar
- Valjoux 78 - Calendar (not a chronograph)
- Valjoux 88 - Hour counter, calendar, moon phase
- Valjoux 90 - Calendar, moon phase (not a chronograph)
- Valjoux 23
- 21,600 A/h
- Valjoux 236
- Valjoux 234 - Date window
- Valjoux 235 - Flyback
- Valjoux 237 - Date window, flyback
- Valjoux 725 - Hour counter, flyback
- Valjoux 726 - Hour counter
- Valjoux 729 - Hour counter, 24 hour hand
- Valjoux 730 - Hour counter, calendar
- Valjoux 227 - Not a chronograph (Rolex)
- Valjoux 228 - Not a chronograph (Certina)
- Valjoux 236