The Seiko 7431-5250 is a watch model based on the 7431 movement.
Parts List
| SA2W85HN00 | crystal - crystal (inorganic) |
| 35M17NA1 | crown |
| 0G240BAA5 | case back gasket - case back gasket |
| 86173990 | crystal gasket - plastic gasket for crystal |
| AL18A | band - band |
| 3AA125F1ANG | others - second hand |
| 3AA125F3ANG | others - second hand |
| 10P07CGH | others - hour hand |
| 2AA100A1BCA | others - minute hand |
| 11P39C3H | others - hour hand |
| 11P39C3M | others - minute hand |
| 82710970 | others - case ring |
| 7431525075B | others - case |
| 743110 | others - machine code |
| 74315250 | others - case back |
| 7431525075 | others - case |
| 7431525075C | others - case |
| 74315310XG18 | others - dial |
| A180BS | others - push pin |
| 10P07CGM | others - minute hand |
| EB0055B01 | others - crown and stem gasket |
| 7431525075A | others - case |
| 0354077 | others - winding stem |
| 1AA070A1BAA | others - hour hand |
| 11SC17T1 | others - second hand |
Caliber 7431
