Felsa 693 Watch Spare Parts: Expert Guide for Collectors and Watchmakers
The Felsa 693 is a highly complex Swiss automatic watch movement from the Bidynator series, introduced in the 1950s. It is celebrated for its triple-date and moonphase complications, making it one of the most intricate movements by Felsa. This calibre measures 11.5 lignes (26 mm) in diameter, features 17 jewels, and runs at 21,600 vibrations per hour (vph). It includes four recessed pushers for setting the day, date, month, and moonphase, reflecting advanced mechanical engineering of its time.
Key Technical Specifications
Calibre: Felsa 693 (Bidynator)
Movement Type: Automatic, self-winding mechanical
Jewels: 17 synthetic rubies
Frequency: 21,600 vph
Diameter: 26 mm (11.5 lignes)
Functions: Central hours, minutes, sweeping seconds, central date hand, day (11 o’clock), month (1 o’clock), moonphase (6 o’clock)
Complications: Triple-date and moonphase
Power Reserve: Unconfirmed (approx. 38-44 hours typical)
Common Spare Parts
Balance Staff: Critical for balance wheel stability and timing precision
Mainspring: New Old Stock (NOS) mainsprings preferred for reliable energy transmission
Rotor & Bearings: Central rotor with ball bearings for efficient bi-directional winding
Stem & Crown: Essential for winding, time setting, and secure operation
Calendar Components: Date wheel, day, month, moonphase mechanisms, and respective pushers
Gear Train Components: Center wheel, third, fourth, and escape wheels for smooth transmission
Hands & Dial Components: Compatible hands for hours, minutes, seconds, and calendar indicators
Jewels: Synthetic rubies reduce friction and wear
Clicks & Springs: Secure ratchet wheels and click springs assist winding robustness
Bridges & Plates: Provide structural support and precision alignment
Maintenance and Sourcing Tips
Verify the “693” calibre marking before purchasing parts for compatibility
Use NOS or authentic donor parts to preserve watch originality and collector value
Trusted vintage parts dealers and reputable online sources recommend for sourcing
Apply Swiss-certified lubricants and professional servicing for longevity
Importance of Genuine Spare Parts
Guarantees mechanical accuracy, durability, and authenticity
Maintains collector appeal and mechanical integrity
Supports expert repairs and reliable daily use
The Felsa 693 remains a sought-after calibre, with genuine spare parts crucial to preserving its complex mechanics and historical value in the vintage watch community.
For any Watch Spare Parts inquiry, Email us for rate and availability: [email protected]
Watch Parts Enquiry
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Stem, Crown, Hands & Spares might be available for this movement.
Email us for rate and availability: [email protected]
Mobile/WhatsApp: +91- 9841 360 340