Eterna Calibre 12824: A Vintage Workhorse for Enthusiasts
The Eterna 12824 stands as a reliable automatic movement from the 1970s, cherished by vintage watch collectors and hobbyist watchmakers for its smooth operation and ETA 2824 base. Launched around 1975, it powered iconic Eterna-Matic models, blending Swiss precision with innovative self-winding tech rooted in Eterna’s ball-bearing heritage.
Historical Context
Debuted in Eterna-Matic watches like the 2002 series from 1972 onward, reviving the brand’s legacy since 1856.
Builds on Eterna’s pioneering 1948 Eterna-Matic, the first self-winding watch using friction-reducing ball bearings.
Featured in stainless steel cases (38-39mm wide), often with crisp date changes and accurate timekeeping ideal for restoration projects.
Technical Specifications
Base: ETA 2824 (Eterna variant), 11.5 lignes (25.6mm diameter), 4.6mm thickness.
Jewels: 25.
Frequency: 28,800 beats per hour (4 Hz) for sweeping seconds hand.
Power reserve: Approximately 38-40 hours.
Functions: Central seconds, date at 3 o’clock (quickset), hacking seconds.
Winding: Bidirectional automatic rotor (ball-bearing design), secured by single central screw; hand-winding capable.
Balance: Large wheel at 12 o’clock with Incabloc shock protection.
Finishing: Clean, functional bridges; “Brevet Swiss” engraving.
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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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