



Favre-Leuba FL 1187 Watch Spare Parts: Essential Guide for Collectors and Watchmakers
The Favre-Leuba FL 1187 is a Swiss manual wind mechanical movement produced during the 1955–1967 period. It features a sweep seconds hand, a date display, and a mounting flange. The calibre is part of the 11.5 ligne family, with a diameter of 25.60 mm and a height of approximately 3.60 mm. Operating at 21,600 vibrations per hour (vph), it incorporates 17 synthetic jewels and advanced features such as Kif-Duofix shock protection and combined setting for the escape wheel. It is a highly reliable calibre valued for precision and durability among vintage watch enthusiasts and horologists.
Key Technical Specifications
Type: Manual wind mechanical
Calibre: FL 1187
Jewels: 17 synthetic rubies
Diameter: 25.60 mm (11.5 ligne)
Height: 3.60 mm
Frequency: 21,600 vibrations per hour
Power Reserve: Approximately 44 hours
Functions: Sweep seconds, date display
Common Spare Parts
Balance Staff: Part number 723, crucial for accurate balance wheel function across FL calibres
Mainspring: Replacement mainsprings suitable for FL 1187 ensuring steady power delivery and longevity
Stem & Crown: Winding stems and crowns compatible with 11.5 ligne cases
Date Mechanism Components: Date wheels, corrector levers, and jumper springs for reliable calendar operation
Hands & Dial Components: Sweep seconds, hour and minute hands; dial feet; NOS and donor parts preferred for authenticity
Gear Train: Center, third, fourth, and escape wheels compatible within FL calibre family
Jewels: Synthetic rubies reducing friction, enhancing durability
Plates & Bridges: Structural parts vital for service and repair
Clicks & Springs: Click springs and ratchets that ensure smooth winding and reliable mechanical operation
Maintenance and Sourcing Tips
Always verify the “FL 1187” marking before ordering parts to ensure compatibility
Prioritize New Old Stock (NOS) or authentic donor parts to maintain watch originality and value
Source components from reputable vintage watch suppliers, online parts dealers, and watchmaker communities
Use Swiss-certified lubricants to maintain optimal movement performance and lifespan
Importance of Genuine Spare Parts
Ensures precise timekeeping, durability, and reliable operation
Preserves the watch’s historical significance and Swiss craftsmanship
Facilitates expert servicing for dependable daily use
Using genuine spare parts keeps the Favre-Leuba FL 1187 a reliable and prized example of classic Swiss watchmaking.
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Stem, Crown, Hands & Spares might be available for this movement.
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