The Seiko 7431-5130 is a watch model based on the 7431 movement.
Parts List
| ES6W51HN00 | crystal |
| 35M17NA1 | crown |
| 35M17NS1 | crown |
| 0F255BAA3 | case back gasket - dichtung -boden rund |
| EB0055B01 | others - crown and stem gasket |
Caliber 7431
Seiko 7431-5130 Watch Guide