MAINSPRING 8-6-21
For Seiko 5139-7020
443/526
Alternate: 443/MST 293
Movement Listing
This part is also used by the following movements:
| Movement | Description | Ligne |
|---|---|---|
| Hamilton 6331 | ||
| Citizen 4-391187 | CITIZEN CASE | |
| Citizen 4-G02000 | CITIZEN CASE | |
| Citizen 4-G07028 | CITIZEN CASE | |
| Citizen 4-S19899 | CITIZE CASE REFERENCE | |
| Gruen HB 111 | H BECKER 111 | |
| Hamilton 6331 |
