The Seiko Y131-6100 is a watch model based on the Y131 movement.
Parts List
| 35M78NH1 | crystal |
| 240W50GN00 | crystal |
| FH2580B01 | case back gasket |
| 86575280 | crystal gasket |
| AL82C | band - band |
| AL81C | band - leather band |
| AL95B | band - leather band |
| A160BS | others - push pin |
| 0354786 | others - winding stem |
| 10CP2NBM | others - minute hand |
| 09CP4NBH | others - hour hand |
| 09CP4NBM | others - minute hand |
| 10CP2FVH | others - hour hand |
| 10CP2FVM | others - minute hand |
| 0Z0060B01 | others - crown and stem gasket |
| 10CP2NBH | others - hour hand |
| 13SC04A3 | others - second hand |
| 13SC04XP | others - second hand |
| 09C44AKH | others - hour hand |