Felsa 721 Watch Spare Parts: Detailed Guide for Collectors and Watchmakers
The Felsa 721 is a Swiss manual wind watch movement, part of the classic Felsa family, manufactured during the mid-20th century. It measures 8.75 lignes (19.40 mm) in diameter and has a thickness of approximately 3.30 mm. The calibre features 17 jewels and operates at a frequency of 18,000 vibrations per hour (vph). Known for its sweep seconds function and durable Incabloc shock protection, it is a favorite among vintage watch collectors and restorers.
Key Technical Specifications
Calibre: Felsa 721
Movement Type: Manual wind
Jewels: 17 synthetic rubies
Frequency: 18,000 vph
Diameter: 19.40 mm (8.75 lignes)
Thickness: 3.30 mm
Functions: Hours, minutes, sweep seconds
Shock Protection: Incabloc
Common Spare Parts
Balance Staff: Essential for maintaining stable oscillations and precise timekeeping
Mainspring: New Old Stock (NOS) mainsprings recommended for consistent and reliable power delivery
Stem & Crown: Requires precise fit to ensure smooth winding and time setting
Gear Train Components: Center, third, fourth, and escape wheels for efficient power transmission
Hands & Dial Components: Compatible hour, minute, and sweep second hands for authentic restoration
Jewels: Synthetic rubies minimize friction and wear on pivot points
Clicks & Springs: Ratchet wheels and click springs secure winding and smooth operation
Bridges & Plates: Provide structural support and correct alignment of the movement parts
Maintenance and Sourcing Tips
Verify the “721” calibre marking to ensure accurate parts compatibility
Use NOS or authenticated donor parts to preserve originality and collector value
Source parts from reputable vintage watch dealers and trusted online suppliers
Utilize Swiss-certified lubricants and seek professional servicing for movement longevity
Importance of Genuine Spare Parts
Guarantees mechanical accuracy, durability, and authenticity preservation
Maintains the watch’s collector appeal and mechanical integrity
Supports expert repairs and reliable daily use
Using genuine spare parts is crucial to preserve the Felsa 721’s reputation as a reliable Swiss manual wind calibre prized by watchmakers and collectors alike.
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