The Seiko 9550-5109 is a watch model based on the 9550 movement.
Parts List
| ES5N34SN00 | crystal |
| 25M04NS1 | crown |
| 25M04NA1 | crown - crown |
| 0G2585N01 | case back gasket |
| 0Z0034B01 | case back gasket - crown and stem gasket |
| ES5N34SN00 | crystal |
| 25M04NS1 | crown |
| 25M04NA1 | crown - crown |
| 0G2585N01 | case back gasket |
| 0Z0034B01 | case back gasket - crown and stem gasket |
Caliber 9550
