The Seiko 6309-8120 is a watch model based on the 6309 movement.
Parts List
| 310W34GN | crystal |
| 45M30NS | crown |
| 45M30NG | crown |
| DB2935B | case back gasket |
| DJ0060B | others - crown gasket |
Caliber 6309
Seiko 6309-8120 Watch Guide
The Seiko 6309-8120 is a watch model based on the 6309 movement.
| 310W34GN | crystal |
| 45M30NS | crown |
| 45M30NG | crown |
| DB2935B | case back gasket |
| DJ0060B | others - crown gasket |