MAINSPRING
For Certina 731
5420/487
Alternate: 5420/ETA 2440
Movement Listing
This part is also used by the following movements:
| Movement | Description | Ligne |
|---|---|---|
| Citizen 4-263626 | CITIZEN CASE | |
| Citizen 4-263626 | CITIZEN CASE | |
| Junghans J-80/12 | AUTOMATIC-RESERVE INDICATOR-SWEEP | 10.5 |
| Seiko 7002-8011 | SEIKO CASE 951201 |
