The Seiko 9521-5100 is a watch model based on the 9521 movement.
Parts List
| SA6N14SN00 | crystal - crystal |
| 30M52NA3 | crown |
| 30M52NS3 | crown |
| 012700N01 | case back gasket - case back gasket |
| YK55A | band - band |
| YK54A | band - band |
| 12ST08CS | others - second hand |
| 11X12DSM | others - minute hand |
| 07X10NGH | others - hour hand |
| 07X10NSH | others - hour hand |
| 11X12DGM | others - minute hand |
| 12ST08DG | others - second hand |
| 0354855 | others - winding stem |
| 9521510025 | others - case |
| 82713540 | others - case ring |
| 952151002E | others - case |
| 95211 | others - machine code |
| 95215100XG14 | others - dial |
| 95215100XS13 | others - dial |
| A170BS | others - push pin |
| EZ0035B01 | others - crown and stem gasket |