The Eterna Calibre 1542 stands as a pinnacle of mid-20th-century Swiss horology, cherished by vintage watch enthusiasts and hobbyist watchmakers for its robust engineering and timeless reliability.
Historical Context
Introduced in the 1950s, the Eterna 1542 emerged during the brand’s golden era of automatic movements, following innovations like the ball-bearing rotor in the Eterna-matic series. This calibre powered elegant dress watches and early sports models, embodying post-war precision craftsmanship. Collectors prize it for its clean architecture and serviceability, often found in unrestored timepieces from the 1960s.
Key Features
Self-winding mechanism with bi-directional rotor for efficient power reserve.
Glucydur balance wheel paired with a flat Nivarox hairspring for temperature stability.
Eterna-U shock protection system, safeguarding the movement during daily wear.
Clean, minimalist bridges with perlage finishing, highlighting artisanal polishing.
Sweep seconds hand for smooth timekeeping, ideal for restoration projects.
Technical Specifications
Dimensions: 11.75 lignes (26.6 mm diameter), approximately 4.6 mm height.
Jewels: 26 high-quality synthetic rubies.
Frequency: 18,000 vibrations per hour (2.5 Hz).
Power Reserve: Around 40-45 hours when fully wound.
Functions: Hours, minutes, central seconds; date complication in some variants.
Winding: Bi-directional automatic via hammer or rotor system, manual overwind capable.
Balance: Screw-regulated Glucydur with poising weights for fine adjustments.
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Watch Parts Enquiry
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Stem, Crown, Hands & Spares might be available for this movement.
Email us for rate and availability: [email protected]
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