Certina 25-651 Watch Spare Parts: Essential Guide for Collectors and Watchmakers
The Certina 25-651 is one of the most renowned and robust automatic movements produced by Certina, widely used across various models from 1960 to 1977. Featuring 27 to 28 jewels, operating at 19,800 vibrations per hour, it boasts a power reserve of approximately 42 hours. This calibre includes a sweep seconds function and a date mechanism that requires setting by cycling the time between 23:00 and 24:00.
Key Technical Specifications
Movement Type: Automatic mechanical
Calibre: Certina 25-651
Size: 11.5 lignes (approx. 25.6 mm diameter)
Height: About 5.35 mm
Jewels: 27-28 synthetic jewels
Beat Rate: 19,800 vibrations per hour (vph)
Power Reserve: Around 42 hours
Functions: Sweep seconds, date (non-quickset)
Common Spare Parts
Mainspring: Vital for consistent power delivery; specific sizing is critical.
Balance Assembly: Includes balance wheel, hairspring, staff, and regulator for accurate timekeeping.
Escape Wheel & Pallet Fork: Core escapement components regulating the movement’s precision.
Gear Train Wheels: Center, third, and fourth wheels ensure smooth energy transmission.
Date Mechanism: Date disc, intermediate wheels, jumper springs for calendar function.
Setting and Winding Components: Stem, crown, clutch wheel, setting lever, springs for reliable manual control.
Oscillating Weight: Enables the automatic self-winding feature.
Plates, Bridges & Screws: Provide structural integrity and component security.
Jewels: Synthetic rubies reduce friction and wear, ensuring durability.
Hands & Dial Parts: Authentic replacements preserve vintage appeal.
Maintenance and Sourcing Tips
Verify calibre “25-651” marking before ordering parts for compatibility.
Prefer New Old Stock (NOS) or trusted donor components for reliable restorations.
Handle delicate components such as escapement and date mechanism carefully during service.
Use lubricants designed for vintage automatic Swiss watches.
Specialist dealers and online retailers stock a broad range of 25-651 parts.
Importance of Genuine Spare Parts
Ensures accuracy, longevity, and smooth functioning.
Preserves the historical authenticity and collector’s value.
Supports professional restoration quality and watch durability.
Using genuine parts guarantees your Certina 25-651 performs true to its legendary Swiss engineering.
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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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