The Seiko 8420-0100 is a watch model based on the 8420 movement.
Parts List
| 160N14SN00 | crystal |
| 25M02NE3 | crown - crown |
| 0Z1700N01 | case back gasket |
| WI066 | others - other band |
| 07R23DGH | others - hour hand |
| DZ0041B01 | others - crown and stem gasket |
Caliber 8420
