Eterna 1487: A Vintage Workhorse for Enthusiasts
The Eterna 1487 calibre stands as a testament to mid-20th-century Swiss engineering, cherished by vintage watch collectors and hobbyist watchmakers for its reliability and repairability. Produced during Eterna’s golden era of self-winding innovations, this automatic movement powered many dress and everyday watches from the 1960s onward, blending smooth operation with enduring durability.
Historical Context
Emerged in the post-WWII boom when Eterna pioneered bidirectional rotor tech via its Eternamatic system.
Often found in smaller “boy’s size” cases around 34mm, ideal for slim vintage profiles.
Shares DNA with Eterna’s 1400-series, emphasizing efficiency over complexity for everyday reliability.
Technical Specifications
Type: Automatic self-winding with bidirectional rotor.
Diameter: 13 lignes (approx. 29mm), compact for versatile case fitting.
Height: Around 5mm, suiting thin profiles.
Jewels: 25, reducing friction in high-wear pivots.
Frequency: 18,000 vph (2.5 Hz), balancing accuracy and longevity.
Power Reserve: Approximately 40-45 hours when fully wound.
Shock Protection: Eterna-U system, safeguarding the balance from impacts.
Balance: Glucydur with flat Nivarox hairspring for stability.
Features: Central seconds, date complication in select variants; no chronograph.
For any Watch Spare Parts inquiry, Email us for rate and availability: [email protected]
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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