The Eterna 1488 (often denoted as 1488K) stands as a hallmark of mid-20th-century Swiss horology, captivating vintage watch enthusiasts and hobbyist watchmakers with its robust automatic design. Introduced around 1964, this calibre powered iconic Eterna-Matic models, blending reliability with elegant engineering typical of Eterna’s innovative spirit. Its compact form suits restoration projects, offering smooth operation prized in dress watches from the 1960s and 1970s.
Historical Context
Launched in 1964 as part of Eterna’s automatic lineup, evolving from earlier calibres like the 1475 family.
Commonly found in Eterna-Matic 1000 references (e.g., Ref. 3331T), with production extending into the late 1960s.
Based on ETA 2433 architecture but customized to Eterna’s specs, reflecting their ETA co-founding roots.
Featured quick-set date and signed crowns, ideal for police or professional-use watches in Europe.
Technical Specifications
Type: Self-winding automatic with manual wind option.
Diameter: 12.5 lignes (28mm).
Height: 5.2mm.
Jewels: 17 or 21 (depending on variant).
Frequency: 21,600 vibrations per hour (6 beats/second).
Power Reserve: Approximately 49 hours.
Functions: Hours, minutes, central seconds, date at 3 o’clock.
Hands: 1.50 x 0.90 x 0.21mm sizing.
Rotor: Bidirectional winding for efficiency.
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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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