The Seiko 8523-5001 is a watch model based on the 8523 movement.
Parts List
| ESDN17LN00 | crystal |
| 35NK5NA1 | crown |
| 35NK5NS1 | crown |
| 0H1900B01 | case back gasket - case back gasket |
| DH0100B01 | case back gasket - crown and stem gasket (4h) |
Caliber 8523
Seiko 8523-5001 Watch Guide