The Seiko 9521-507A is a watch model based on the 9521 movement.
Parts List
| ES8N68SN00 | crystal - crystal |
| 30M52N03 | crown - crown |
| 0G2585N01 | case back gasket |
| GK27A | band - band |
| 09X02DGH | others - hour hand |
| 09X02DGM | others - minute hand |
| 12ST08DG | others - second hand |
| 0354855 | others - winding stem |
| 9521507A1C | others - case |
| 82712560 | others - case ring |
| 95211 | others - machine code |
| 95215070XG14 | others - dial |
| A180AS | others - push pin |
| EZ0035B01 | others - crown and stem gasket |