The Seiko 8420-6600 is a watch model based on the 8420 movement.
Parts List
| ES9N28SN00 | crystal |
| 25M02NE3 | crown - crown |
| 0G1800N01 | case back gasket |
| PK14ZB | band - leather band |
| A120AS | others - push pin |
| 06R28DGH | others - hour hand |
| 06R28DGM | others - minute hand |
| DZ0041B01 | others - crown and stem gasket |
Caliber 8420
