The Seiko 7431-6020 is a watch model based on the 7431 movement.
Parts List
| 250N11JN00 | crystal |
| 35NA3NA1 | crown |
| 0G2410B02 | case back gasket |
| DZ0065B01 | case back gasket - button gasket |
Caliber 7431
Seiko 7431-6020 Watch Guide
The Seiko 7431-6020 is a watch model based on the 7431 movement.
| 250N11JN00 | crystal |
| 35NA3NA1 | crown |
| 0G2410B02 | case back gasket |
| DZ0065B01 | case back gasket - button gasket |