Eterna Caliber 1159: A Vintage Bumper Jewel
Vintage watch enthusiasts and hobbyist watchmakers cherish the Eterna Caliber 1159 for its pioneering role in early automatic winding technology. Produced in the 1940s, this bumper automatic movement represents a bridge between hammer-winding precursors and modern rotor designs, offering robust performance in slim packaging.
Historical Context
Emerged post-WWII as Eterna’s evolution from Caliber 1158 hammer-wind models, marking the brand’s shift toward self-winding innovation.
Featured in antimagnetic stainless steel watches with gradient bull’s-eye dials, prized for everyday durability.
Known as a “triumph of horological excellence,” it powered affordable yet reliable timepieces during the Atomic Age.
Key Features
Bumper automatic system: Jewel-tipped hammer strikes the rotor for bi-directional winding, producing a distinctive “ping” sound.
Glucydur screwed balance with flat Nivarox hairspring for stability and shock resistance via Eterna-U system.
Clean, perlage-decorated plates with efficient Eterniflex mainspring for smooth power delivery.
Technical Specifications
Type: Automatic bumper, center seconds.
Size: 13 lignes (29.4 mm diameter), 5.75 mm height.
Jewels: 19–21.
Frequency: 18,000 vph.
Power reserve: Approximately 42 hours.
Additional: No quick-set date; gradual change around midnight.
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