Landeron 189 Watch Spare Parts: Essential Guide for Collectors and Watchmakers
The Landeron 189 is a Swiss manual wind chronograph movement with a date function, produced primarily from the 1940s through the 1970s. It measures 13.75 lignes (31 mm diameter) and has a height of approximately 6.85 mm. Featuring 17 jewels and operating at 18,000 vibrations per hour (vph), it offers a power reserve of about 41 hours. This calibre uses the cam-switch chronograph mechanism, distinguished by its reliability and simplicity, making authentic spare parts crucial for effective maintenance and restoration.
Key Technical Specifications
Calibre: Landeron 189
Type: Manual wind chronograph with date
Diameter: 13.75 lignes (31 mm)
Height: 6.85 mm
Jewels: 17
Frequency: 18,000 vph
Power Reserve: Approximately 41 hours
Functions: Chronograph (central seconds, 30/45-minute counter, small seconds), date window at 6 o’clock
Switching System: Cam lever, non-column wheel chronograph
Common Spare Parts
Chronograph Runner & Bridge: Controls smooth chronograph seconds operation
Cam Levers & Reset Hammers: Engage precise start, stop, and reset chronograph actions
Date Mechanism Components: Date jumper, driving wheel, springs ensuring accurate calendar function
Balance Staff: Maintains oscillation consistency and precise timekeeping
Mainspring & Barrel: NOS or genuine Swiss parts for steady power delivery
Pallet Fork & Escape Wheel: Ensure smooth escapement operation
Pushers & Return Springs: Reliable tactile control for chronograph and calendar functions
Jewels & Bearings: Reduce friction for extended movement lifespan
Hands: Appropriate chronograph and date-compatible hands
Maintenance and Sourcing Tips
Verify Landeron 189 markings for part compatibility
Use New Old Stock (NOS) or authentic Swiss parts for best fit and durability
Engage specialized chronograph watchmakers for servicing
Importance of Genuine Spare Parts
Maintains precise chronograph and date functions
Preserves historical and collector value
Supports expert restoration and long-lasting performance
Utilizing authentic Landeron 189 spare parts is essential for preserving this iconic manual wind cam lever chronograph’s legacy, highly regarded by collectors and horologists alike.
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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]
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