The Seiko 8420-7059 is a watch model based on the 8420 movement.
Parts List
| ESBN28SM01 | crystal |
| ESBN28SM02 | crystal |
| 25M28NA1 | crown |
| 0H1500N01 | case back gasket - case back gasket |
| 0Z0034B01 | case back gasket - crown and stem gasket |
Caliber 8420
Seiko 8420-7059 Watch Guide