Certina 29-151 Watch Spare Parts: Detailed Overview for Collectors and Watchmakers
The Certina 29-151 is an electronic tuning-fork movement derived from the ESA 9162/64 “Mosaba” calibre, used in Certina Certronic models from around 1969. This unique calibre combines electronic innovation with mechanical precision, featuring a biorhythm indicator in some versions. It measures about 29.4 mm in diameter, 4.85 mm in height, and contains 12 synthetic jewels.
Key Technical Specifications
Movement Type: Electronic tuning-fork
Calibre: Certina 29-151 (based on ESA 9162/64)
Diameter: 29.4 mm
Height: 4.85 mm
Jewels: 12 synthetic jewels
Functions: Sweep seconds, biorhythm indicator, date (in some variants)
Common Spare Parts
Tuning-Fork Assembly: The electronic component essential for accurate timekeeping.
Balance Wheel & Regulator: Maintaining stable oscillations for precision.
Circuit & Coil Components: Necessary for the electronic control system.
Mainspring & Gear Train: Transmit mechanical power to the watch hands.
Hands & Dial Parts: Including components for the specialized biorhythm display.
Plates, Bridges & Screws: Structural parts for precise mechanical assembly.
Jewels: Synthetic rubies that enhance durability by reducing friction.
Maintenance and Sourcing Tips
Confirm the calibre “29-151” marking to ensure correct parts ordering.
Prefer New Old Stock (NOS) or original donor parts for reliable restoration.
Handle electronic components with care during servicing to prevent damage.
Use specialized lubricants appropriate for electronic-mechanical hybrid watches.
Specialist suppliers and vintage watch dealers stock these parts periodically.
Importance of Genuine Spare Parts
Guarantees lasting precision and reliable operation from the hybrid electronic-mechanical system.
Maintains the watch’s historical value and authenticity.
Supports expert restoration preserving unique biorhythm and electronic features.
Using genuine parts helps keep your Certina 29-151 performing with classic Swiss innovation and craftsmanship.
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Stem, Crown, Hands & Spares might be available for this movement.
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