The Seiko 1320-6020 is a watch model based on the 1320 movement.
Parts List
| ESHN87JN00 | crystal |
| 35NA1NA1 | crown |
| 0H1650B01 | case back gasket - case back gasket |
| DH0100B01 | case back gasket - crown and stem gasket (4h) |
Caliber 1320
Seiko 1320-6020 Watch Guide