Eterna 1187: A Vintage Gem for Enthusiasts
The Eterna Caliber 1187 stands as a testament to mid-20th-century Swiss watchmaking ingenuity, favored by vintage collectors and hobbyist repairers for its robust construction and classic design. Produced in the 1940s-1950s by Eterna, this manual-wind movement powered elegant dress watches, blending reliability with refined finishing that appeals to those restoring heirlooms or building custom pieces.
Historical Context
Introduced post-World War II, the 1187 emerged during Eterna’s push toward precision timepieces amid evolving industry standards. It reflects the era’s focus on layered architecture to accommodate advanced features like direct center seconds, influencing later designs from A. Schild (AS) lineages. Vintage enthusiasts prize it for its scarcity in unrestored condition, often found in slim cases from brands like Eterna KonTiki precursors.
Technical Specifications
Size: 10.5 lignes (approximately 23.3 mm diameter); two-layer height around 4.5 mm for slim profiles.
Jewels: 17 jewels, reducing friction in high-wear pivots.
Frequency: 18,000 beats per hour (A/h) for smooth sweeping seconds.
Lift angle: 52 degrees, optimizing power delivery.
Balance: Nickel screw balance with long regulator arm for fine adjustments; Incabloc shock protection.
Escapement: Swiss lever, counterclockwise hairspring direction.
Winding: Yoke system (dial-side), manual wind only; no date or chronograph complications.
Features: Directly driven center seconds via large minute wheel; no hacking or quickset.
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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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