The Seiko 1231-0039 is a watch model based on the 1231 movement.
Parts List
| 185W31SV01 | crystal |
| 30M89NS1 | crown |
| 25M15NS1 | crown |
| 0Z0034B01 | case back gasket - crown and stem gasket |
| 0F165BAA5 | case back gasket - case back gasket |
| 86581915 | crystal gasket |
| WHZ10 | band - leather band |
| 123100 | others - machine code |
| 12310039SA | others - case |
| 12310060XS14 | others - dial |
| 81504839 | others - screw |
| 81833311 | others - case bow |
| 82803490 | others - case ring |
| A120AS | others - push pin |
| 0351117 | others - winding stem |
| 06SS133G | others - second hand |
| 08S19D3H | others - hour hand |
| 08S19D3M | others - minute hand |
Caliber 1231
Other models with the same movement
| 1231-0018 |
| 1231-0019 |
| 1231-0029 |
| 1231-0049 |
| 1231-5009 |
| 1231-5019 |
| 1231-5029 |
| 1231-5039 |
| 1231-5049 |