| Brand: | Valjoux | 
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| Family: | |||
| Height: | 6.95 mm | ||
| Jewels: | 17 | ||
| Reserve: | 48 hours | ||
| Frequency: | 18000 A/h | ||
| Winding: | Hand winding | ||
| Diameter: | 29.5 mm (13 ligne) | ||
| Complications: | 2-Button, 9-Column Chronograph, Chronograph, Column Wheel Chronograph, Date, Day, Month, Quick Date Correction, Quick Day Correction, Quick Month Correction | ||
| Hands: | 12 Hour Chronograph Hand at 6:00, 30 Minute Chronograph Hand at 3:00, Central 60 Second Chronograph Hand, Central Date Pointer, Central Hour Hand, Central Minute Hand, Day Window at 11:30, Month Window at 12:30, Small Seconds Hand at 9:00 | ||
| Production: 1946 – 1974 | |||||||||||
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| 1910s | 1920s | 1930s | 1940s | 1950s | 1960s | 1970s | 1980s | 1990s | 2000s | 2010s | 2020s |
The Valjoux 72C is a “triple date” hand-winding chronograph movement in the Valjoux 72 family. Cal. 72C was introduced around 1946 and produced through 1974. Cal. Valjoux 723 is similar. Cal. Valjoux 88 adds a moon phase disc at 6:00. Cal. 72C was replaced by Cal. Valjoux 730 in the 1970s.
It is said that about 1,300 examples of Cal, 72C were produced, far fewer than the similar full-calendar Cal. 88.
The Valjoux 23C and 72C are almost identical except that the latter adds a 12 hour counter at 6:00 on the dial. This function is powered by a gear on the dial side of the movement which tends to wear over time.
While all Valjoux 72C movements feature inset pushers at 8:30 and 10:00 to advance the calendar functions, only later versions can advance the day using a half-push of the pusher at 10. Cal. 72C also came with either flat or Breguet hairsprings with different regulators.
- Central hours and minute hands
- Central chronograph seconds
- Central date by pointer
- 30 minute counter at 3:00
- 12 hour counter at 6:00
- Date corrector at 8:30
- Running small seconds at 9:00
- Day and Month corrector at 10:00
- Day window at 11:30
- Month window at 12:30
The Valjoux 72C was used by many brands, notably including Anonimo, Baume & Mercier, Bovet, Breguet, Breitling, Certina, Doxa, Eberhard & Co., Enicar, Eterna, Franck Muller, Gallet, Girard-Perregaux, Heuer, Jaeger-LeCoultre, Longines, Minerva, Nivada, Ulysse Nardin, Universal Genève, Wakmann, Wittnauer, and Zodiac.
| 18,000 A/h No Chronograph | 18,000 A/h No Hour Counter | 18,000 A/h Hour Counter | 21,600 A/h No Hour Counter | 21,600 A/h Hour Counter | |
| Base | Valjoux 23 | Valjoux 72 Valjoux 722 | Valjoux 236 | Valjoux 726 Valjoux 727 | |
| Flyback | Valjoux 230 | Valjoux 720 | Valjoux 235 | Valjoux 725 | |
| Date | Valjoux 234 | ||||
| Triple Date | Valjoux 69 Valjoux 78 | Valjoux 23C | Valjoux 723 Valjoux 72C | Valjoux 730 | |
| Flyback and Date | Valjoux 237 | ||||
| 24 Hour Hand | Valjoux 724 | Valjoux 729 | |||
| Calendar and Moon Phase | Valjoux 89 Valjoux 90 | Valjoux 88 | Valjoux 886 | ||
| Tide Calculator | Valjoux 721 |
