The Eterna 12660 stands as a refined manual-wind caliber from the early 1970s, cherished by vintage watch enthusiasts for its slim profile and ETA-derived precision. Introduced around 1971 by Eterna, this movement appeals to hobbyist watchmakers restoring classic timepieces due to its straightforward servicing and robust construction.
Historical Context
Launched in 1971 as part of Eterna’s collaboration with ETA, basing it on the ETA 2660 family.
Emerged during the quartz crisis era, embodying Swiss mechanical resilience in slim dress watches.
Featured in elegant Eterna models, prized today for patina potential and historical value in collections.
Technical Specifications
Type: Manual wind, no self-winding rotor.
Diameter: 17.5 mm (7.75 lignes).
Height: 3.5 mm, enabling ultra-thin case designs.
Jewels: 17, reducing friction in high-wear areas.
Frequency: 28,800 vibrations per hour (vph) for smooth seconds sweep.
Power reserve: Approximately 49 hours.
Functions: Hours, minutes, central seconds; no date complication.
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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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