The Seiko 8420-5209 is a watch model based on the 8420 movement.
Parts List
| ES3N50SN | crystal |
| 25M02NA3 | crown |
| 0G1900N | case back gasket |
Caliber 8420
Seiko 8420-5209 Watch Guide
The Seiko 8420-5209 is a watch model based on the 8420 movement.
| ES3N50SN | crystal |
| 25M02NA3 | crown |
| 0G1900N | case back gasket |