Landeron 187 Watch Spare Parts: Essential Guide for Collectors and Watchmakers
The Landeron 187 is a Swiss manual wind chronograph movement from the 1960s, part of the Landeron 48 family with a date complication at 6 o’clock. It measures 13.75 lignes (31 mm diameter) with a height of 6.85 mm and features 17 jewels. Operating at 18,000 vibrations per hour (vph), it offers a power reserve of approximately 41 hours. Known for its cam-switch mechanism, it balances reliability and simplicity, making authentic spare parts crucial for restoration and maintenance.
Key Technical Specifications
Calibre: Landeron 187
Movement Type: Manual wind chronograph with date
Diameter: 13.75 lignes (31 mm)
Height: 6.85 mm
Jewels: 17
Frequency: 18,000 vph
Power Reserve: About 41 hours
Functions: Chronograph (central seconds, 30/45-minute counter), date window at 6 o’clock
Switch System: Cam-lever switching mechanism
Common Spare Parts
Chronograph Runner & Bridge: Critical for smooth chronograph central seconds function
Cam Levers & Reset Hammers: Ensure accurate start, stop, and reset of chronograph
Date Mechanism Parts: Date jumper, driving wheel, date springs for smooth calendar operation
Balance Staff: Maintains stable oscillations and precise timekeeping
Mainspring & Barrel: Preferably New Old Stock (NOS) or authentic parts for power consistency
Pallet Fork & Escape Wheel: Essential for escapement and movement regulation
Pushers & Return Springs: Provide reliable tactile control over chronograph and date functions
Jewels & Bearings: Reduce friction to prolong movement life
Hands: Appropriate chronograph and date-compatible hands
Maintenance and Sourcing Tips
Confirm Landeron 187 marking for correct part compatibility
Source NOS or genuine Swiss parts from trusted suppliers
Seek experienced chronograph watchmakers for servicing complex movement and calendar functions
Importance of Genuine Spare Parts
Maintains precise chronograph and calendar functioning
Preserves historical and collector value
Supports expert restorations and durable performance
Using genuine Landeron 187 spare parts is essential to uphold this cam-switch chronograph’s legacy, appreciated by collectors and watchmakers worldwide.
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Watch Parts Enquiry
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Stem, Crown, Hands & Spares might be available for this movement.
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