The Seiko 7439-5100 is a watch model based on the 7439 movement.
Parts List
| SAEN23JN00 | crystal |
| 30N91NS1 | crown |
| 30N91NA1 | crown |
| 0G2880B09 | case back gasket |
| DZ0065B01 | case back gasket - button gasket |
Caliber 7439
Seiko 7439-5100 Watch Guide
The Seiko 7439-5100 is a watch model based on the 7439 movement.
| SAEN23JN00 | crystal |
| 30N91NS1 | crown |
| 30N91NA1 | crown |
| 0G2880B09 | case back gasket |
| DZ0065B01 | case back gasket - button gasket |