Eterna Caliber 1428: A Vintage Automatic Gem
Vintage watch enthusiasts and hobbyist watchmakers cherish the Eterna Caliber 1428 for its pioneering role in automatic movements during the 1950s. Introduced as part of the legendary Eterna-Matic series, this slim, reliable Swiss-made caliber powered elegant Centenaire dress watches, blending precision engineering with timeless design.
Historical Context
Debuted around 1956, the 1428 emerged from Eterna’s innovative ball-bearing legacy, revolutionizing self-winding technology.
Featured in 34mm gold-filled or stainless steel cases, often with minimalist dials showcasing dauphine hands and applied indices.
Represented Eterna’s push for thin, robust automatics, influencing later ETA evolutions and earning a reputation for durability in daily wear.
Technical Specifications
Type: Automatic winding with offset center wheel for compact profile.
Beat Rate: 18,000 vibrations per hour (vph), balancing smoothness and longevity.
Jewels: 21 jewels, reducing friction in high-wear pivots.
Dimensions: Approximately 11.5 lignes (25.6mm diameter), 4.9mm height—ideal for slim cases.
Shock Protection: Eterna-U system, enhancing resistance to impacts.
Accuracy: Typically 0-10 seconds per day across positions, with strong amplitude post-service.
Winding: Self-winding rotor, bidirectional via ball-bearing system; hand-windable via signed crown.
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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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