The Eterna Caliber 1136: A Hidden Gem for Vintage Enthusiasts
For vintage watch lovers and hobbyist watchmakers, the Eterna Caliber 1136 stands out as a robust, no-nonsense automatic movement from the golden era of Swiss horology. Produced in the 1970s by Eterna, this caliber powered affordable yet reliable timepieces like the KonTiki divers and sport watches. Its straightforward design appeals to restorers seeking parts compatibility and easy servicing, evoking the mechanical purity before quartz dominance.
Historical Context
Emerged during Eterna’s post-WWII expansion, blending industrial efficiency with Swiss precision.
Featured in models emphasizing durability for everyday adventurers, predating modern ETA clones.
Gained cult status among collectors for its ball-bearing rotor system, a nod to Eterna’s innovative heritage from the 1940s.
Technical Specifications
Type: Automatic, self-winding mechanical.
Jewels: 25.
Diameter: 11.5 lignes (25.6 mm).
Height: 4.6 mm.
Frequency: 28,800 vph (4 Hz).
Power Reserve: ~42 hours.
Functions: Hours, minutes, central seconds, date at 3 o’clock.
Rotor: Bidirectional winding via Eterna’s signature ball-bearing system for smooth efficiency.
Balance: Glucydur with Breguet overcoil hairspring; Incabloc shock protection.
Regulation: Fine adjustment via eccentric regulator.
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Watch Parts Enquiry
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Stem, Crown, Hands & Spares might be available for this movement.
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