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Brand: | Valjoux | 
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|---|---|---|---|
| Family: | |||
| Height: | 6.0 mm | ||
| Jewels: | 17 | ||
| Reserve: | 45 hours | ||
| Frequency: | 18,000 A/h | ||
| Winding: | Hand winding | ||
| Diameter: | 31.0 mm (14 ligne) | ||
| Complications: | 2-Button, Cam Switching Chronograph, Chronograph | ||
| Hands: | 30 Minute Chronograph Hand at 3:00, 45 Minute Chronograph Hand at 3:00, Central 60 Second Chronograph Hand, Central Hour Hand, Central Minute Hand, Small Seconds Hand at 9:00 | ||
| Distinguishing Technical Characteristics | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
 Hand-Winding  Clockwise Balance Cock |
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| Production: 1966 – 1973 | |||||||||||
| 1910s | 1920s | 1930s | 1940s | 1950s | 1960s | 1970s | 1980s | 1990s | 2000s | 2010s | 2020s |
Valjoux Cal. 7730 is a cam-switching chronograph movement based on the Venus 188. After Valjoux acquired Venus in 1966, the company took the affordable Venus Cal. 188 architecture and launched a new Valjoux-branded movement. The only notable change was the use of a mobile stud carrier. Cal. 7730 was produced from 1966 through 1973 with a reported 175,000 examples produced. It was replaced by the redesigned Valjoux 7733 starting in 1969.
Cal. 7731 is essentially the same movement with a new balance cock.
Images are taken from official publications and are used here for commentary and educational purposes. Copyright is held by the original owner as noted.
