The Seiko 5420-5140 is a watch model based on the 5420 movement.
Parts List
| ES4N76GN | crystal |
| 35M94NA1 | crown |
| OA1800NO | case back gasket |
Caliber 5420
Seiko 5420-5140 Watch Guide
The Seiko 5420-5140 is a watch model based on the 5420 movement.
| ES4N76GN | crystal |
| 35M94NA1 | crown |
| OA1800NO | case back gasket |