The Seiko 6431-5050 is a watch model based on the 6431 movement.
Parts List
| SA2N28GN00 | crystal - crystal |
| 35M82NA1 | crown - crown |
| 35M82NS1 | crown - crown |
| 35M82N | crown |
| 0Z2702N0A | case back gasket - case back gasket |
| 86561080 | crystal gasket - plastic gasket for crystal |
| 86561081 | crystal gasket - plastic gasket for crystal |
| NL02A | band - band |
| NL01A | band - band |
| YL14A | band - band |
| 11T08NSH | others - hour hand |
| 11T10NSM | others - minute hand |
| 6431505061 | others - case |
| 82701820 | others - case ring |
| 6431505075 | others - case |
| 6431505075A | others - case |
| 0354641 | others - winding stem |
| 64315100XG14 | others - dial |
| 64315100XS13 | others - dial |
| 64315100XY14 | others - dial |
| A190BS | others - push pin |
| 13SC04A2 | others - second hand |
| 13SC04ES | others - second hand |
| 11T08NGH | others - hour hand |
| 0Z0060B01 | others - crown and stem gasket |
| 11T10NGM | others - minute hand |
Caliber 6431
