The ETA 2817 is a manual-wind mechanical movement from ETA’s versatile 2800 family, developed in the late 1960s and produced from 1971 to 1977 in limited quantities. This compact caliber exemplifies ETA’s push for part reduction and efficiency, sharing nearly half its components with siblings like the 2816, while featuring sweep seconds for smooth timekeeping.
Key Specifications
Type: Manual wind, no date complication (evolved from earlier 2750/2770 bases).
Production Era: 1971–1977, limited output as part of the 2800 series overhaul.
Part Count: Around 43 parts in base manual-wind versions, minimizing small springs via integrated designs.
Beat Rate: Likely 3 Hz (21,600 vph), aligning with family standards for reliability.
Historical Context
Introduced amid ETA’s modernization, the 2817 addressed inefficiencies in prior movements by using formed sheet metal over machined parts, slashing costs without sacrificing durability. Minor day-date tweaks distinguished it from cousins like the 2810 (later 2816), but its manual-wind focus suited slim dress watches. Production waned pre-quartz crisis, with few surviving variants.
Technical Highlights
Efficiency: Low part count enabled slim profiles, ideal for vintage tool or dress watches.
Reliability: Built on proven ETA evolution from 2370/2600 lines, emphasizing simplicity.
Modern Relevance: Scarce today; enthusiasts seek it for restorations, though successors like 2801 dominate.
Collectibility and Use
Vintage ETA 2817-powered pieces appeal to horology fans for their understated engineering. Service parts remain available via specialists, but scarcity drives value in original condition. Its legacy endures in the 2800 family’s influence on Swiss watchmaking.
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Stem, Crown, Hands & Spares might be available for this movement.
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