The Seiko 7431-5100 is a watch model based on the 7431 movement.
Parts List
| SA3W47HN00 | crystal |
| 35M27NA1 | crown |
| 0G235BAA3 | case back gasket |
| 86564250 | crystal gasket - plastic gasket for crystal |
| LK46B | band - leather band |
| LK47B | band - leather band |
| 3AA125F1ANG | others - second hand |
| EB0055B01 | others - crown and stem gasket |
| 0354077 | others - winding stem |
| 743110 | others - machine code |
| 7431510075 | others - case |
| 743151007N | others - case |
| 74315150XG18 | others - dial |
| 74315150XS18 | others - dial |
| 82700550 | others - case ring |
| A180BS | others - push pin |
| 10P11CGH | others - hour hand |
| 10P11CGM | others - minute hand |
| 10SC25T1 | others - second hand |
Caliber 7431
