U/L SPRING
For Seiko 4N00-0401
723/1221
Alternate: 1321/OME 1070
Movement Listing
This part is also used by the following movements:
| Movement | Description | Ligne |
|---|---|---|
| Parrenin 901 | DIRECT CENTER SECOND | 11.5 |
| Seiko 2620-5530 | SEIKO CASE REFERENCE | |
| Seiko V243-5110 |
