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Balance Staff
For Seiko W442-4010
Ronda #5490
A: 2.51mm
Movement Listing
This balance staff is used by the following movements:
| Movement | Shock System | Description |
|---|---|---|
| Movado A1 | Ordinary/None | ETA 980.004/005 |
| Ronda 6063-21 | Ordinary/None | 21,600 BPH-SWEEP-JEWELLED LEVER |
| Seiko 9550-5049 | Ordinary/None | SEIKO CASE REFERENCE |
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