The Seiko 8420-5370 is a watch model based on the 8420 movement.
Parts List
ES4N44SN00 | crystal |
25M02NS3 | crown |
0G2100N01 | case back gasket - case back gasket |
0Z0034B01 | case back gasket - crown and stem gasket |
ZK17A | band - leather band |
ZK18A | band - leather band |
A140BS | others - push pin |
DZ0041B01 | others - crown and stem gasket |