Eterna Caliber 1512: A Vintage Gem for Enthusiasts
The Eterna Caliber 1512 stands as a hallmark of mid-20th-century Swiss horology, cherished by vintage watch collectors and hobbyist watchmakers for its robust construction and innovative self-winding mechanism. Produced from the late 1950s through the 1960s, this automatic movement powered iconic Eterna models like the Eterna-matic series, blending reliability with the brand’s pioneering ball-bearing rotor technology.
Historical Context
Emerged during Eterna’s golden era of automatic innovations, building on the 1948 Eterna-matic patent for low-friction rotor mounting.
Featured in dress watches and tool watches, often with date complications, appealing to post-war professionals seeking durable timepieces.
Known for clean aesthetics, minimal engravings, and serviceability, making it ideal for restoration projects.
Technical Specifications
Size: 11.75 lignes (26.60 mm diameter), 5.45 mm height.
Jewels: 25 (including shock-protected pivots).
Frequency: 18,000 vph (2.5 Hz), with Glucydur balance and Nivarox hairspring.
Winding: Bi-directional rotor on 5 micro ball bearings (0.65 mm diameter), Eterniflex mainspring for efficient power delivery.
Functions: Central seconds, date at 3 o’clock (gradual change, no quick-set).
Power Reserve: Approximately 40-45 hours when fully wound.
Shock Protection: Eterna-U system on balance staff.
Finishing: Perlage on bridges, polished rotor with minimal markings.
For any Watch Spare Parts inquiry, Email us for rate and availability: [email protected]
Watch Parts Enquiry
* If you are unable to fill out any of the required information fields, please type “N/A”.
Stem, Crown, Hands & Spares might be available for this movement.
Email us for rate and availability: [email protected]
Mobile/WhatsApp: +91- 9841 360 340