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ETA 903
Ligne: 11.5'''
Jewels: 17
Power Reserve: 40 hrs
Frequency: 21600 vph
Type: Manual Wind
Period used: ~1965
Diameter: 26 mm
Height: 3.5 mm
Hands: 1.50 x 0.90 x 0.21 mm
Base: Forster 212
The ETA 903 manual wind watch movement features an indirectly driven minute system, allowing for a relatively large balance and low profile. It shares several similarities with the 1185 watch movement, although specific differences are not known. The movement includes functions such as sweep seconds and a quickset date that can be adjusted by repeatedly pulling the crown. The ETA 903 movement was used during the period of approximately 1965.
The ETA 903 features the following functions:
- Date: quickset by repeated pulling the crown
- Manual Winding
- Sweep second
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
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Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.10 x 0.130 x 10.0 mm | Manual | Buy mainspring |
Incabloc Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
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KIF Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
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Documents
Parts Listing
| Part Description | Reference # | Alternate | Buy |
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