The Seiko Y131-6300 is a watch model based on the Y131 movement.
Parts List
| 250W08GN00 | crystal |
| 35M78NH1 | crystal |
| FH2580B01 | case back gasket |
| 86576045 | crystal gasket |
| AL99C | band - leather band |
| A160BS | others - push pin |
| 0354786 | others - winding stem |
| 10CP2AWM | others - minute hand |
| 10CP2AWH | others - hour hand |