Seiko 957 Movement Details
Seiko caliber 957 is a hand winding watch movement produced in the 1960s.
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| Sub-brands: | Sportsman |
| Day / date? | No |
| GMT / world time? | No |
| Chronograph? | No |
| Number of jewels: | 17 |
| Development division: | Suwa (Nagano) |
| Related movements: | 6602 |