The Tissot caliber 2481 is a manual-winding mechanical movement from the mid-20th century, most likely produced in the 1950s to early 1960s. It belongs to a family of Tissot movements developed for time-only wristwatches, with a focus on mechanical reliability, ease of production, and suitability for slim case designs. While not a highly complex movement, the 2481 exemplifies the functional engineering standards Tissot upheld during its golden era of mechanical watchmaking.

Overview of the Tissot Caliber 2481

This caliber was commonly installed in simple, elegant wristwatches, typically featuring:

• Manual winding

• Central hour and minute hands

• A small seconds subdial at 6 o’clock

Watches powered by the 2481 were usually housed in round stainless steel or gold-plated cases, often measuring between 32 mm and 35 mm in diameter. The dials were minimalist, featuring baton or Arabic numerals, designed for everyday wear or formal occasions.

These models were sold under various Tissot lines, including Antimagnetique and Seastar, both popular in domestic and export markets.

Technical Specifications

• Type: Manual-winding

• Functions: Hours, minutes, small seconds

• Jewels: 15

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

• Power Reserve: Approximately 40 hours

• Diameter: Around 27 mm (approx. 12 lignes)

• Height: ~4 mm

• Shock Protection: Some versions fitted with Incabloc or equivalent

• Finish: Brushed or matte bridges with Tissot markings, blued screws on many examples

The 2481 features a traditional Swiss lever escapement, designed to prioritize durability and long-term serviceability.

Maintenance and Service

As with all vintage mechanical movements, the Tissot 2481 requires regular maintenance, ideally every 4 to 6 years, even if it appears to run well. Lubricants dry out over time, which can accelerate wear and reduce accuracy.

A full service should include:

1. Complete disassembly of the movement

2. Ultrasonic cleaning of all parts

3. Inspection for wear on pivots, wheels, and mainspring

4. Replacement of worn components, if needed

5. Lubrication with modern synthetic oils

6. Reassembly and fine adjustment

7. Optional case resealing, though most watches from this era are not water-resistant by modern standards

A vintage-experienced watchmaker is essential, as sourcing parts may require donor movements.

Common Wear Areas

• Mainspring fatigue leading to reduced power reserve

• Balance staff pivots and cap jewels prone to wear if lubrication is old or missing

• Crown and stem can loosen from frequent manual winding

• Seconds pinion wear, especially since small seconds run continuously

• Gear train bushings, which may show signs of friction over time

Despite these, the 2481 is a forgiving and serviceable movement, valued for its mechanical honesty.

Best Practices for Use

• Wind once daily, stopping when resistance is felt

• Avoid exposure to water or high humidity

• Keep away from magnets, which can disrupt timekeeping

• Store in a dry environment, preferably face-up to minimize positional wear

Collectibility

The Tissot 2481 is not a rare or highly collectible movement on its own, but it holds strong appeal for:

• Enthusiasts of mid-century Swiss watchmaking

• Those seeking reliable vintage dress watches

• Collectors who value manual-wind simplicity

• Anyone wanting an affordable entry into vintage horology

It also carries significance as part of Tissot's broad range of in-house mechanical calibers, which laid the groundwork for the brand's lasting reputation.

Conclusion

The Tissot caliber 2481 is a simple, reliable manual-wind movement built for everyday wristwatches during a defining era of Swiss watchmaking. While mechanically modest, it reflects the precision and quality Tissot delivered in its mid-century designs. With proper servicing and respectful handling, the 2481 remains a dependable and enjoyable movement, ideal for vintage collectors and wearers alike.