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ETA 857
Basic Information
| Name | ETA 857 |
|---|
| Manufacturer | ETA |
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| Launch Year | 1943 |
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| Is COSC certified | No |
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Technical Details
| Lignes Dimensions | 14 ‴ |
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| Dimensions | 31.58 mm |
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| Height | 5.45 mm |
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| Further Measures | Nominal Diameter (Dn): 31.58mm |
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| Power Reserve | 50 hours |
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| Frequency | 18,000 vph |
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| Jewels | 15 |
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Complications and Specifications
| Shape | Round |
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| Complications | - Sweep Second
- Chronograph Minute
|
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| Regulator Type | Pinned Regulator (or Index Regulator) |
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| Movement Type | Manual |
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| Escapement Type | Swiss Lever |
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| Control Type | Balance Wheel |
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| Winding Type | Stem Winding (Crown) |
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| Setting Type | Stem Set (Crown Pull) |
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Additional Information
| Hand Sizes | 1.50 x 0.90mm |
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| Hand Count | 3 |
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| Country Of Manufacture | (not set) |
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| Notes | Remarks: widely equal to Eterna 852S
Other data: balance staff:
U906
stem:
W1402
mainspring / battery:
Zf1534, 1.80 x 13.5 x 0.17mm
balance staff ronda: 838 (14) stem ronda: 42 (14) |
|---|
| Signature | 1943: 3035132, Eterna; Eterna-L
(Eterna 852S) |
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| Import Codes | |
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Metadata
| Created At | Sep 15, 2023 |
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| Updated At | Jan 28, 2024, 8:58:15 PM |
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