Landeron 51 Watch Spare Parts: Complete Guide for Collectors and Watchmakers
The Landeron 51 is a manual wind Swiss cam-switch chronograph movement, produced between 1947 and the 1970s, and highly sought after by vintage enthusiasts. Measuring 13.75 lignes (about 31.5 mm diameter) and 6.2 mm thick, the Landeron 51 contains 17 jewels, operates at 18,000 vibrations per hour (vph), and typically runs for approximately 41 hours on a full wind. Its two-pusher cam system changed the face of affordable chronographs, making it important for restorers to source precise and authentic spare parts.
Key Technical Specifications
Calibre: Landeron 51
Type: Manual wind chronograph
Diameter: 13.75 lignes (31.5 mm)
Height: 6.2 mm
Jewels: 17
Frequency: 18,000 vph
Power Reserve: About 41 hours
Functions: Chronograph (central seconds, 30-minute counter, running small seconds)
Unique Feature: Cam-switching system, no column wheel
Shock Protection: None or Incabloc, depending on generation
Common Spare Parts
Chronograph Runner & Bridge: Essential for accurate central seconds chronograph operation
Chronograph Cam Levers & Reset Hammer: Enable precise start, stop, and reset of chronograph
Balance Staff: Maintains steady oscillation and timekeeping stability
Mainspring: Swiss NOS or compatible replacements for reliable power delivery
Pallet Fork & Escape Wheel: Key for escapement function and smooth movement
Minute Recording Wheel & Pinion: Operate the 30-minute counter at 3 o’clock
Pushers & Return Springs: For tactile chronograph control; correct sizing ensures proper function
Jewels & Bearings: Minimize friction and maximize durability
Hands: Original or suitable replacements for chronograph seconds, minutes, and sub-dials
Maintenance and Sourcing Tips
Confirm part compatibility since Landeron 51 evolved over two generations (some components differ between early and late models)
Look for “Landeron 51” stamped under the balance wheel for proper identification
Source original or NOS Swiss-made parts for durability and historical fidelity
Partner with chronograph specialists for repair and restoration work
Importance of Genuine Spare Parts
Maintains crisp chronograph timing and reliability
Preserves collector and historical value
Enables accurate, robust restoration for long-term use
Using genuine Landeron 51 spare parts is crucial for upholding this calibre’s reputation as an affordable, innovative, and enduring icon of Swiss chronograph history.
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