Certina 25-681 Watch Spare Parts: Detailed Overview for Collectors and Watchmakers
The Certina 25-681 is a Swiss automatic mechanical movement produced between 1972 and 1977, known for its robustness and precision. This calibre is part of the “288” series, featuring an increased balance wheel oscillation rate of 28,800 vibrations per hour (vph), and comes with 27 jewels and a power reserve of approximately 42 hours. It serves as an improved version of the 25-671 calibre and includes a date function set by changing the time between 23:00 and 24:00.
Key Technical Specifications
Movement Type: Automatic mechanical
Calibre: Certina 25-681
Size: 11.5 lignes (26 mm diameter)
Height: About 5.35 mm
Jewels: 27 synthetic jewels
Beat Rate: 28,800 vibrations per hour (vph)
Power Reserve: Approximately 42 hours
Functions: Sweep seconds, date (non-quickset)
Common Spare Parts
Balance Assembly: Balance wheel, hairspring, staff, and regulator essential for accurate timing.
Mainspring: Correct sizing is critical for reliable power delivery.
Escape Wheel & Pallet Fork: Key escapement parts regulating movement precision.
Gear Train Wheels: Center, third, and fourth wheels ensure smooth energy flow.
Date Mechanism: Date disc, intermediate wheels, jumpers for the calendar function.
Setting and Winding Components: Stem, crown, clutch wheel, setting lever, and springs to facilitate winding and setting.
Oscillating Weight: Integral to the automatic winding system.
Plates, Bridges & Screws: Structural components for mounting and stability.
Jewels: Synthetic rubies reduce friction and wear, extending movement life.
Hands & Dial Components: Period-correct authentic replacements.
Maintenance and Sourcing Tips
Confirm the calibre “25-681” marking before ordering parts for accuracy.
Favor New Old Stock (NOS) or trusted donor parts for authentic restoration.
Handle escapement, date, and winding parts with care during servicing.
Use lubricants tailored for vintage automatic Swiss movements.
Specialist suppliers stock a variety of parts for this movement.
Importance of Genuine Spare Parts
Maintains accuracy, durability, and reliable operation.
Preserves historical authenticity and collector value.
Supports professional restorations to extend watch longevity.
Using genuine parts ensures your Certina 25-681 continues to exemplify Swiss watchmaking excellence.
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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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