The Eterna 1411, also known as the 1411U, stands as a hallmark of mid-20th-century Swiss horology, cherished by vintage watch enthusiasts and hobbyist watchmakers for its robust automatic design and smooth sweeping seconds hand.
Historical Context
Introduced in the 1950s, the Eterna 1411 powered iconic Eterna-Matic models, embodying the era’s push toward self-winding reliability without sacrificing elegance. Produced during Eterna’s golden age, it reflects Swiss precision engineering tailored for everyday luxury watches, often found in 34mm gold-plated or stainless steel cases from the early post-war period.
Technical Specifications
Type: Automatic mechanical, self-winding with sweep seconds.
Jewels: 17 jewels.
Beat rate: 18,000 vibrations per hour (vph), delivering a fluid 5 beats per second.
Power reserve: Approximately 40-45 hours when fully wound.
Dimensions: 11.75 lignes (26.60mm diameter), suitable for dress watches.
Functions: Hours, minutes, central sweep seconds; bidirectional rotor for efficient winding.
Escapement: Swiss lever escapement with shock protection.
Finish: Matte bridges and plates, practical for serviceability.
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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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