The Seiko 7431-5210 is a watch model based on the 7431 movement.
Parts List
| SADN91HN00 | crystal - crystal |
| 35NH3NA1 | crown |
| 35NH3NS1 | crown |
| 0H2500B01 | case back gasket - case back gasket |
| DZ0065B01 | case back gasket - button gasket |
| JK05A | band - band |
| LK40D | band - band |
| JK06A | band - band |
| 10P07CGH | others - hour hand |
| 10P07DGH | others - hour hand |
| 11P15ASH | others - hour hand |
| 11P15ASM | others - minute hand |
| 2AA100A1BCA | others - minute hand |
| 3AA125F1A6S | others - second hand |
| 3AA125F1ANG | others - second hand |
| 11P15AGH | others - hour hand |
| 11P15AGM | others - minute hand |
| 74315210 | others - case back |
| 7431521025Y | others - case |
| 743110 | others - machine code |
| 74315270XB14 | others - dial |
| 74315270XG18 | others - dial |
| 74315270XS17 | others - dial |
| 74315680XG18 | others - dial |
| A190BS | others - push pin |
| 7431521025A | others - case |
| 10P07CGM | others - minute hand |
| 0354077 | others - winding stem |
| 7431521011 | others - case |
| 82711390 | others - case ring |
| 7431521025 | others - case |
| 1AA070A1BAA | others - hour hand |
| 1AA070A1BNG | others - hour hand |
| 10SC23T2 | others - second hand |
| 10SC23T1 | others - second hand |
| 2AA100A1BDG | others - minute hand |
| 10P07DGM | others - minute hand |
| 11P15NGH | others - hour hand |
Caliber 7431
