The Seiko 1221-5950 is a watch model based on the 1221 movement.
Parts List
| ET7N13SN01 | crystal - crystal (sapphire) |
| 25M25DA5 | crown - crown (3h) |
| 0G1940B02 | case back gasket |
| DK63C | band - leather band |
| 2AA067A1BDG | hand - minute hand |
| 07P03DGM | hand - minute hand |
| 07P03JGH | hand - hour hand |
| 122110 | others - machine code |
| 12211490XG14 | others - dial |
| 12215950 | others - case back |
| 122159504LA | others - case |
| 07SC35VG | others - second hand |
| DZ0040B01 | others - crown and stem gasket |
| 0351117 | others - winding stem |
| 82832450 | others - case ring |
| A120AS | others - push pin |
Caliber 1221
