Valjoux 23

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.

• 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)
• 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)