MAINSPRING 2.70-.21-520 (16,5)
For Citizen 4-391403
721/111
Alternate: 721/BUS 15
Movement Listing
This part is also used by the following movements:
| Movement | Description | Ligne |
|---|---|---|
| Seiko 7903-008A | SEIKO | |
| Citizen 4-795962 | CITIZEN CASE | |
| Dugena BID. 85SCI | BIDLINGMAIER 85SCI | 692 |
| General 850 | FF 72 | |
| Rolex 90520 | ROLEX CASE REFERENCE | |
| Seiko 7903-008A | SEIKO |
