The Eterna 1422 calibre stands as a hallmark of mid-20th-century Swiss horology, captivating vintage watch enthusiasts and hobbyist watchmakers with its robust automatic design and innovative features from the early Eterna-Matic era.
Historical Context
Introduced around 1952, the Eterna 1422 powered the pioneering Eterna-Matic line, one of the first self-winding watches with a concealed crown and bidirectional rotor. Variants like 1422U and 1422UD appeared in the late 1950s, often in 34-35mm stainless steel cases. Collectors prize it for its smooth operation and reliability, embodying post-war precision engineering.
Technical Specifications
Type: Automatic mechanical self-winder
Jewels: 17
Beat rate: 18,000 vph (some sources note 21,600 vph variants)
Functions: Hours, minutes, seconds, date (quick-set via push-pull crown on select models)
Shock protection: Eterna-U or Diashock system
Balance: Glucydur screwed balance with Nivarox hairspring
Rotor: Bi-directional, highly polished, silent Eterniflex mainspring winding
Dimensions: Typically fits 34mm cases; movement diameter around 11 lignes
Key Features for Enthusiasts
Seamless power reserve from efficient bi-directional winding, ideal for daily wear restoration projects.
Hidden crown design enhances water resistance and aesthetic minimalism in vintage cases.
Service-friendly layout with accessible parts like pallet fork, escape wheel, and oscillating weight.
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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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