CASE RING
721/GRU 520
Alternate: 721/GRU 520
Movement Listing
This part is also used by the following movements:
| Movement | Description | Ligne |
|---|---|---|
| Citizen 4-350430 | CITIZEN CASE | |
| Citizen 4-S59947 | CITIZEN CASE | |
| Jaeger Lecoultre 430 | BACKWIND | |
| Seiko 1000-3630 | SEIKO CASE REFERENCE | |
| Seiko 2N20-5020 | SEIKO CASE REFERENCE COSERVE 2003/2004 | |
| Seiko 7N43-6B40 | ANALOG QUARTZ | |
| Seiko 8420-6259 | SEIKO CASE REFERENCE | |
| Zenith 17.2 | 21,600 BPH W/O SEC | 10.5 |
