Certina 25-652 Watch Spare Parts: An Essential Guide for Collectors and Watchmakers
The Certina 25-652 is a Swiss automatic mechanical movement produced from 1960 to 1977. It is recognized for its reliable automatic winding system, sweep seconds, and day-date complications. This calibre features 27 to 28 jewels and runs at 19,800 vibrations per hour (vph), offering a power reserve of approximately 42 hours. It is a derivative of the 25-651 calibre but includes a day and date function requiring date setting by advancing time between 11 PM and midnight.
Key Technical Specifications
Movement Type: Automatic mechanical
Calibre: Certina 25-652
Size: 11.5 lignes (about 25.6 mm diameter)
Height: Approx. 6.0 mm
Jewels: 27/28 synthetic jewels
Beat Rate: 19,800 vibrations per hour (vph)
Power Reserve: Around 42 hours
Functions: Sweep seconds, day and date (non-quickset)
Common Spare Parts
Balance Assembly: Balance wheel, hairspring, staff, and regulator for precise timekeeping.
Mainspring: Proper sizing necessary for consistent power delivery.
Escape Wheel & Pallet Fork: Core escapement components maintain movement accuracy.
Gear Train Wheels: Center, third, and fourth wheels ensure smooth power flow.
Day-Date Mechanism: Date disc, day disc, intermediate wheels, jumpers for calendar function.
Setting and Winding Components: Stem, crown, clutch wheel, setting lever, springs for reliable winding and setting.
Oscillating Weight: Facilitates automatic winding.
Plates, Bridges & Screws: Structural components securing movement parts.
Jewels: Synthetic rubies reduce friction, improving durability.
Hands & Dial Components: Authentic replacements preserve vintage appearance.
Maintenance and Sourcing Tips
Confirm the calibre “25-652” marking to ensure correct part sourcing.
Prefer genuine or New Old Stock (NOS) parts for lasting repairs.
Handle escapement and calendar components carefully during servicing.
Use lubricants tailored for vintage automatic Swiss movements.
Specialist suppliers widely stock these components.
Importance of Genuine Spare Parts
Ensures accuracy, longevity, and smooth function.
Maintains the watch’s historical authenticity and collectible value.
Supports quality restoration efforts for enduring performance.
Using genuine parts keeps your Certina 25-652 running with authentic Swiss precision and craftsmanship.
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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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