The Eterna Calibre 1497 stands as a pinnacle of 1960s Swiss horological innovation, captivating vintage watch enthusiasts and hobbyist watchmakers with its robust self-winding design and enduring reliability. Produced around 1968-1969, this automatic movement powered numerous Eterna-Matic models, blending efficiency with classic finishing that appeals to restorers seeking period authenticity.
Historical Context
Introduced during Eterna’s golden era of automatic advancements, the 1497 evolved from earlier self-winders like the 1400 series, incorporating excenter winding for smooth operation. It featured the optional Golden Heart—a 23K gold-plated, rhodium-finished rotor weighing just 1.3 grams—for enhanced momentum and luxury appeal. Collectors prize it for its role in durable dress and sports watches, often found in unrestored pieces from the late ’60s.
Technical Specifications
Type: Automatic self-winding with sweep seconds, day-date complication, and quick-set date via crown.
Dimensions: 11.75 ligne (26.6 mm diameter), 4.8 mm height; mounting diameter 15.3 mm, stem height 1.7 mm.
Frequency: 21,600 vph (3 Hz) for smooth seconds hand motion.
Jewels: 17-25 (variations exist), using Diafix settings for escapement durability.
Power Reserve: Approximately 42 hours.
Balance: Glucydur with Nivarox hairspring and Eterna-U shock protection.
Winding: Bi-directional rotor via single gear stage; hack feature for precise time-setting.
Functions: Hours, minutes, central seconds, day at 9 o’clock, date at 3 o’clock.
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