Eterna Caliber 1057: A Vintage Gem for Enthusiasts
The Eterna 1057 stands as a pinnacle of mid-20th-century Swiss horology, cherished by vintage watch collectors and hobbyist watchmakers for its robust construction and timeless reliability. Produced by AHO (A. Schild & Co., often used by Eterna), this manual-wind movement exemplifies classical engineering from the 1950s and 1960s, ideal for restoration projects.
Historical Context
Emerged in the post-war era, powering affordable yet precise Eterna dress watches.
Known for sandwich plate design enabling indirect center seconds, a hallmark of “better” movements.
Appeals to hobbyists due to accessible parts and straightforward servicing.
Technical Specifications
Size: 10 1/4 lignes (approximately 23mm diameter).
Jewels: 17, reducing friction in high-wear pivots.
Frequency: 18,000 A/h (beats per hour) for smooth operation.
Escapement: Pallet lever, standard for reliability.
Balance: Nickel screw balance, clockwise hairspring direction.
Shock protection: Dual Super-Shock-Resist systems for durability.
Winding: Classic yoke mechanism; long regulator arm for precise adjustments.
Construction: Angled plates with no moveable stud; measured 10 1/2 lignes overall.
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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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