The Seiko 5421-0030 is a watch model based on the 5421 movement.
Parts List
| 140N29AN00 | crystal |
| 35N18NA1 | crown |
| 35N18NS1 | crown |
| 0A1400N01 | case back gasket |
| 0G0055B01 | case back gasket - crown and stem gasket |
Caliber 5421
Seiko 5421-0030 Watch Guide
The Seiko 5421-0030 is a watch model based on the 5421 movement.
| 140N29AN00 | crystal |
| 35N18NA1 | crown |
| 35N18NS1 | crown |
| 0A1400N01 | case back gasket |
| 0G0055B01 | case back gasket - crown and stem gasket |