The Seiko 7431-5090 is a watch model based on the 7431 movement.
Parts List
| ESLN25JN00 | crystal |
| 30N37NS1 | crown |
| 30N37NA1 | crown |
| 0H2450B01 | case back gasket |
| DZ0065B01 | case back gasket - button gasket |
Caliber 7431
Seiko 7431-5090 Watch Guide
The Seiko 7431-5090 is a watch model based on the 7431 movement.
| ESLN25JN00 | crystal |
| 30N37NS1 | crown |
| 30N37NA1 | crown |
| 0H2450B01 | case back gasket |
| DZ0065B01 | case back gasket - button gasket |