Certina 28-451 Watch Spare Parts: Essential Guide for Collectors and Watchmakers
The Certina 28-451 is a reliable Swiss automatic watch movement produced from 1953 to 1960. Known for its robust design and precision, it features 21 to 23 jewels, operates at a frequency of 18,000 vibrations per hour, and offers a power reserve of around 42 hours. It supports automatic winding and includes a date complication controlled by time adjustment between 23:00 and 24:00, without a quickset function.
Key Technical Specifications
Movement Type: Automatic mechanical
Calibre: Certina 28-451
Diameter: 28.0 mm (12.5 lignes)
Height: Approximately 6.5 mm
Jewels: 21 to 23 synthetic jewels
Beat Rate: 18,000 vibrations per hour (vph)
Power Reserve: About 42 hours
Functions: Sweep seconds, automatic winding, date (non-quickset)
Common Spare Parts
Mainspring: Sized 1.35 x 0.090 x 250 x 8.0 mm to ensure consistent power delivery.
Balance Assembly: Balance wheel, hairspring, staff, and regulator vital for precision.
Escape Wheel & Pallet Fork: Key escapement parts regulating timekeeping.
Gear Train Components: Center, third, and fourth wheels for smooth power transmission.
Setting and Winding Parts: Stem, crown, clutch wheel, setting lever, and springs for manual functions.
Bumper Spring: Integral to the bumper automatic winding mechanism.
Oscillating Weight & Bearings: Facilitate self-winding via bumper system.
Plates, Bridges & Screws: Provide essential structure to movement assembly.
Jewels: Synthetic rubies reduce friction and wear.
Hands & Dial Components: Authentic replacements maintain vintage watch aesthetics.
Maintenance and Sourcing Tips
Confirm the calibre “28-451” marking when sourcing parts to ensure compatibility.
Prefer genuine or New Old Stock (NOS) parts for reliable restoration.
Handle sensitive escapement, balance, and bumper parts carefully during repair.
Use lubricants designed specifically for vintage automatic Swiss watches.
Numerous specialty watch parts dealers and vintage suppliers offer these components.
Importance of Genuine Spare Parts
Maintains precision, longevity, and dependable operation.
Preserves the watch’s historical authenticity and collectible value.
Supports professional restoration and ensures lasting functionality.
Using genuine parts guarantees your Certina 28-451 remains a true example of Swiss horological craftsmanship and reliability.
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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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