The Seiko 8523-5120 is a watch model based on the 8523 movement.
Parts List
| ES4W81HN00 | crystal |
| 35E05NS1 | crown - crown |
| 35E05NA1 | crown - crown |
| FE208BAA1 | case back gasket |
| EB0055B0A | others - crown and stem gasket |
Caliber 8523
Seiko 8523-5120 Watch Guide
The Seiko 8523-5120 is a watch model based on the 8523 movement.
| ES4W81HN00 | crystal |
| 35E05NS1 | crown - crown |
| 35E05NA1 | crown - crown |
| FE208BAA1 | case back gasket |
| EB0055B0A | others - crown and stem gasket |