Eterna Caliber 1405 captivates vintage watch enthusiasts and hobbyist watchmakers with its elegant manual-wind design from the mid-20th century. Rooted in Eterna’s innovative heritage, this compact movement exemplifies Swiss precision engineering, ideal for restoration projects or slim dress watches.
Historical Context

Eterna introduced the 1405 in the 1950s as part of its high-quality manual lineup, bridging eras of hand-wound reliability before automatics dominated. Often found in vintage Eterna dress watches, it shares design DNA with siblings like the 1407 and 1408, featuring modern gear trains for smooth operation. Hobbyists prize it for serviceability and parts availability through aftermarket suppliers.
Technical Specifications

Size: 11.5 ligne (25.6 mm diameter), 4.5 mm height—perfect for thin cases.

Jewels: 17 jewels, reducing friction in high-wear pivots.

Beat rate: 18,000 vibrations per hour (2.5 Hz) for balanced accuracy.

Power reserve: Approximately 40-45 hours on full wind.

Functions: Hours, minutes, central seconds; indirect minute drive.

Balance: Glucydur with flat Nivarox hairspring; Eterna shock protection.

Finish: Perlage on bridges, blued screws for aesthetic appeal.

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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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