Certina 13-21 Watch Spare Parts: A Collector’s and Restorer’s Resource
The Certina 13-21 is a finely crafted vintage Swiss mechanical movement from the mid-20th century, appreciated for its compact build and high accuracy. Designed predominantly for ladies’ watches, this calibre is sought after by collectors and watchmakers for its dependability and robust engineering.
Key Technical Specifications
Movement Type: Manual wind, mechanical
Size: 5.5 lignes (approx. 13.0 x 15.4 mm)
Thickness: ~3.55mm
Jewels: 17 ruby bearings
Beat Rate: 19,800 vibrations per hour (vph)
Power Reserve: 43 hours
Lift Angle: 51°
Balance: Nickel anular balance, shock protected (Incabloc)
Escapement: Swiss lever, excenter adjust mechanism for fine regulation
Common Spare Parts Sought
Mainspring: Ensures consistent power; verify compatibility with this exact model.
Balance Assembly: Includes the Incabloc-protected balance wheel, staff, and hairspring for stable timekeeping.
Barrel and Gear Train: Barrel, center, third, and fourth wheels essential for energy transfer.
Escape Wheel & Pallet Fork: Critical escapement components for motion regulation.
Jewels: 17 high-quality ruby bearings reduce friction and prolong movement life.
Setting and Winding Mechanism: Stem (e.g., No. 401), crown, setting lever, and click springs (e.g., No. 430).
Hands and Dial Feet: Vintage-compatible options to maintain original aesthetics.
Plates, Bridges, Screws: Structural parts to support assembly and mechanical precision.
Complete Movements: Occasionally available in NOS or serviced condition for full restoration.
Maintenance and Sourcing Tips
Check for calibre marking “13-21” before ordering parts, due to similarity with 13-20 and 13-22.
Use NOS or donor movements for best authenticity and fit.
Handle shock-protected balance and escapement with particular care.
Source from trusted vintage Certina and Swiss spare parts retailers.
Lubricate moderately using vintage-correct oils to prevent over-oiling.
Value of Genuine Spare Parts
Guarantees mechanical accuracy and reliability.
Maintains collector and vintage value.
Supports proper restoration for decades of dependable use.
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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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