The Valjoux 77 is a vintage manual-winding chronograph movement produced by Valjoux, a renowned Swiss manufacturer known for its robust and precise mechanical calibers. This movement belongs to the classic era of mechanical chronographs and reflects the high-quality craftsmanship typical of mid-20th-century Swiss watchmaking.

Technical Specifications

• Type: Manual winding chronograph

• Chronograph Mechanism: Column wheel

• Functions: Hours, minutes, running seconds, chronograph with 30-minute and 12-hour counters

• Frequency: Typically 18,000 vibrations per hour (2.5 Hz)

• Jewels: Usually around 17 to 19

• Power Reserve: Approximately 40 to 45 hours

Design and Engineering

The Valjoux 77 features a traditional column-wheel chronograph mechanism, known for its smooth and reliable operation. It includes two chronograph counters—one for minutes and another for hours—allowing precise timing of events up to 12 hours.

The movement is characterized by its robust construction and ease of maintenance, which has contributed to its long-lasting popularity among watchmakers and collectors alike.

Applications

The Valjoux 77 was widely used by many prestigious watch brands in their manual-winding chronograph models during the mid-1900s. Its reliable design made it suitable for sports watches, pilot watches, and other professional timing instruments.

Maintenance and Collectibility

Due to its solid construction and widespread use, the Valjoux 77 is relatively straightforward to service. Replacement parts are generally available, ensuring these vintage movements can be maintained for continued use.

Collectors appreciate the Valjoux 77 for its historical significance and mechanical reliability, often seeking watches equipped with this caliber as part of vintage chronograph collections.

Conclusion

The Valjoux 77 is a classic manual-winding chronograph movement embodying Swiss watchmaking expertise. Its precise column-wheel mechanism, robust build, and practical chronograph functions have secured its place in horological history as a trusted and highly regarded movement among vintage watch enthusiasts.