


Felsa 125 Watch Spare Parts: Detailed Guide for Collectors and Watchmakers
The Felsa 125 is a prominent Swiss manual wind watch movement manufactured around 1936. Known for its large size and precise engineering, the calibre measures approximately 16 lignes (35.5 mm diameter) and stands 4.55 mm high. It features between 7 to 15 synthetic jewels depending on the version and operates at a frequency of 18,000 vibrations per hour (vph), offering a solid power reserve of about 36 hours. The movement includes a Breguet hairspring, enhancing timekeeping accuracy and stability.
Key Technical Specifications
Calibre: Felsa 125
Movement Type: Manual wind
Jewels: 7 to 15 synthetic rubies
Frequency: 18,000 vph
Diameter: 35.52 mm
Height: 4.55 mm
Power Reserve: Approximately 36 hours
Functions: Stem wind and set, sub-seconds
Common Spare Parts
Balance Staff: Essential for smooth balance wheel oscillations and precision timing
Mainspring: New Old Stock (NOS) mainsprings recommended for durability and consistent energy delivery
Stem & Crown: Correct sizing is critical for proper winding and time setting
Gear Train Components: Includes center wheel, third wheel, fourth wheel, and escape wheel crucial for accurate movement
Hands & Dial Components: Original hour, minute, and sub-second hands with compatible dial feet
Jewels: Synthetic rubies reduce friction and wear at pivot points
Clicks & Springs: Ratchet wheels and click springs maintain secure winding operation
Bridges & Plates: Structural components that hold movement parts firmly in place
Maintenance and Sourcing Tips
Verify the “125” calibre marking prior to ordering parts to ensure perfect compatibility
Prioritize NOS or original donor components to preserve authenticity and increase collector value
Reputable vintage watch parts dealers and online watchmaking resources provide reliable spare parts
Swiss-certified lubricants and expert servicing improve performance and longevity
Importance of Genuine Spare Parts
Guarantees accuracy, robustness, and historic value preservation
Maintains the watch’s collector appeal and mechanical authenticity
Facilitates expert restoration for reliable, long-lasting use
Using genuine spare parts is crucial for sustaining the Felsa 125’s reputation as a durable, high-quality Swiss mechanical movement treasured by watch enthusiasts and restorers.
For any Watch Spare Parts inquiry, Email us for rate and availability: [email protected]
Watch Parts Enquiry
* If you are unable to fill out any of the required information fields, please type “N/A”.
Stem, Crown, Hands & Spares might be available for this movement.
Email us for rate and availability: [email protected]
Mobile/WhatsApp: +91- 9841 360 340