The Eterna Calibre 965 stands as a testament to mid-20th-century Swiss horological ingenuity, captivating vintage watch enthusiasts and hobbyist watchmakers with its robust construction and timeless reliability.
Historical Context
Developed in the 1940s by Eterna, the Calibre 965 emerged during a pivotal era when manual-wind movements prioritized precision and durability for everyday wear. This calibre powered numerous Eterna dress and tool watches, embodying the brand’s reputation for clean, efficient designs free from unnecessary frills. Hobbyists prize it today for its serviceability and the satisfaction of hands-on restoration, often sourcing parts from vintage suppliers.
Technical Specifications
Type: Manual wind, single-beat movement
Diameter: 10.5 lignes (approximately 23.3 mm)
Height: 3.45 mm, slim profile ideal for thinner cases
Jewels: 17, strategically placed to minimize friction
Frequency: 18,000 vibrations per hour (vph), balancing accuracy and longevity
Power reserve: Around 42-48 hours on a full wind
Balance: Glucydur wheel with flat Nivarox hairspring for stability
Shock protection: Eterna-U system, resilient against daily jolts
Functions: Hours, minutes, center seconds; sub-seconds variant available
Finishing: Perlage on plates, blued screws, and signed bridges for aesthetic appeal
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]
Mobile/WhatsApp: +91- 9841 360 340