The Seiko 8420-0290 is a watch model based on the 8420 movement.
Parts List
| 185N08SN00 | crystal |
| 25M08EXA | crown |
| 0H1720N01 | case back gasket - case back gasket |
| DK09P | band - leather band |
| A110AS | others - push pin |
| 07V08DSH | others - hour hand |
| DZ0041B01 | others - crown and stem gasket |
Caliber 8420
