The Seiko 8420-5430 is a watch model based on the 8420 movement.
Parts List
| ES4N86SN00 | crystal - crystal |
| 25M02NA4 | crown - crown |
| 25M02NS4 | crown - crown |
| 0G1900N01 | case back gasket - case back gasket |
| 0Z0034B01 | case back gasket - crown and stem gasket |
| MK54A | band - band |
| MK53A | band - band |
| 07R01DGH | others - hour hand |
| 07R01DGM | others - minute hand |
| A110BS | others - push pin (for mb) |
| 84205500XG14 | others - dial |
| 84205500XS13 | others - dial |
| 8420543025 | others - case |
| 82702460 | others - case ring |
| 8420543027 | others - case |
| 0354815 | others - winding stem |
| DZ0041B01 | others - crown and stem gasket |
Caliber 8420
