REGULATOR SPRING
For Gruen 501
440/456
Movement Listing
This part is also used by the following movements:
| Movement | Description | Ligne |
|---|---|---|
| Seiko 5J23A | ||
| Seiko 5Y31-5210 | SEIKO CASE REFERENCE | |
| Seiko W670-4010 | SEIKO CASE 971201 | |
| Seiko W670-4010 | SEIKO CASE 971201 |
