Certina 17-021 Watch Spare Parts: Key Information for Collectors and Watchmakers
The Certina 17-021 is a vintage Swiss-made mechanical watch movement, manual winding, known for its precision engineering and durability. This calibre was widely used in mid-20th century Certina models and remains highly regarded among watch collectors and restorers. Ensuring access to genuine spare parts is crucial for maintaining its performance and historical value.
Key Technical Specifications
Movement Type: Manual winding mechanical
Calibre: Certina 17-021 (also known as Kurth 17.021, K.F.G. 17-021)
Size: Approximately 11.5 lignes (25.6 mm) diameter
Jewels: 17 synthetic jewels
Beat Rate: 19,800 vibrations per hour (vph)
Power Reserve: Approximately 43-48 hours
Height: Around 3.85 to 4.55 mm depending on version
Functions: Sweep seconds, date (varies by variant)
Commonly Required Spare Parts
Mainspring: Critical for power delivery; aim for original or New Old Stock (NOS) quality.
Balance Assembly: Including balance wheel, hairspring, staff, and regulator for accurate timekeeping.
Escape Wheel and Pallet Fork: Essential escapement components ensuring smooth movement.
Gear Train Components: Center wheel, third wheel, and fourth wheel for efficient energy transfer.
Setting and Winding Parts: Stem, crown, setting levers, and springs vital for winding and setting functions.
Date Mechanism Parts: Date wheels, correctors, and related springs (for date variants).
Plates, Bridges, and Screws: Structural components ensuring movement integrity.
Hands and Dial Components: Period-compatible hands and dial feet preserving watch authenticity.
Maintenance and Sourcing Advice
Confirm the “17-021” calibre marking to ensure part compatibility.
Prefer NOS or quality donor parts for durability and precision fit.
Handle escapement and date parts carefully during servicing to avoid damage.
Use oils designed for vintage mechanical movements for effective lubrication without over-oiling.
Reputable suppliers specializing in vintage Certina parts stock a wide selection for this calibre.
Importance of Genuine Spare Parts
Ensures continued accuracy, dependability, and longevity of your watch.
Preserves the collector’s value and historical significance.
Supports professional restoration for enduring functionality.
Using original parts for your Certina 17-021 maintains its precision and honors Swiss horological 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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