Eterna Calibre 12801: A Timeless Manual Marvel
The Eterna 12801 stands as a refined manual-wind movement from the Swiss manufacturer Eterna, introduced around 1995 as an evolution of the ETA 2801 base calibre. Cherished by vintage watch enthusiasts and hobbyist watchmakers, it embodies precision engineering in an 11.5 ligne (26mm diameter) package, ideal for restoration projects and smaller dress watches.
Historical Context
Launched in the mid-1990s, the 12801 reflects Eterna’s commitment to enhancing proven ETA designs with proprietary finishing touches.
Part of Eterna’s 128xx family, it appeals to collectors seeking reliable, serviceable movements from the pre-quartz dominance era.
Commonly found in vintage Eterna dress watches, it offers a smooth sweeping seconds hand and robust construction for daily wear or heirloom builds.
Technical Specifications
Type: Manual wind, hand-wound.
Jewels: 17.
Frequency: 28,800 vph (4 Hz), ensuring smooth operation.
Power reserve: Approximately 46 hours.
Dimensions: 26mm diameter, 3.35mm height—slim profile suits thin cases.
Balance: Glucydur with flat hairspring; Incabloc shock protection.
Functions: Hours, minutes, center seconds; no date complication.
Finishing: Perlage on bridges, blued screws for aesthetic appeal during servicing.
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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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