The Seiko 9521-5040 is a watch model based on the 9521 movement.
Parts List
| RE2N92GN00 | crystal |
| 25M04NS1 | crown |
| 25M04NA1 | crown - crown |
| 0G2780N01 | case back gasket - case back gasket |
| 0Z0034B01 | case back gasket - crown and stem gasket |
| NK46A | band - leather band |
| 09X02DGH | others - hour hand |
| 09X02DGM | others - minute hand |
| 12ST08DG | others - second hand |
| 0354855 | others - winding stem |
| 82709900 | others - case ring |
| 95211 | others - machine code |
| 9521504025 | others - case |
| 95215040XG14 | others - dial |
| A200AS | others - push pin |
| DZ0041B01 | others - crown and stem gasket |