The Seiko 8223-5090 is a watch model based on the 8223 movement.
Parts List
| ES1W02GN00 | crystal |
| 35M68NS1 | crown - crown |
| 35M68NA1 | crown - crown |
| FH2881B01 | case back gasket - case back gasket |
| 8617-8041 | crystal gasket |
| 8617-8030 | bezel gasket |
Caliber 8223
Seiko 8223-5090 Watch Guide