The Eterna 1446 is a compact, mid‑range Swiss automatic movement from the late 1960s, still appreciated today by vintage watch collectors and hobbyist watchmakers for its reliability and classic lever design.
Overview & History
Eterna 1446 is a self‑winding (automatic) movement made in Switzerland around the late 1960s, typical of Eterna’s automatic calibres of that era.
It belongs to Eterna’s family of automatic movements that share the Eterna‑Matic design principles, including ball‑bearing rotors and robust construction.
The movement is often found in vintage dress and sports models from brands that used Eterna ébauches, and it can be serviceable today with proper donor parts.
Key Features
Central sweep seconds, with a smooth, continuous glide of the seconds hand (no sub‑seconds).
Swiss lever escapement, a common and well‑understood design for maintenance and regulation.
Incabloc shock protection for the balance jewels, improving durability against shocks and drops.
Automatic winding with a central rotor, allowing good winding performance in daily wear.
Technical Specifications
Type: Automatic / self‑winding
Escapement: Swiss lever
Shock system: Incabloc
Hands: Central seconds, hour, and minute; no date or day complication
Winding mechanism: Central rotor with automatic winding
Balance: Glucydur or similar low‑expansion alloy balance wheel
Typical beat rate: 21,600 vibrations per hour (3 Hz)
Power reserve: Around 36–40 hours, typical for movements of this size and era
Size: Approximately 13‴ (about 29–31 mm diameter), making it suitable for medium‑sized vintage cases.
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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]
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