The Seiko 1221-5860 is a watch model based on the 1221 movement.
Parts List
| REDN29SV01 | crystal - crystal (sapphire) |
| 30M31DG5 | crown |
| 0Z0034B01 | case back gasket - crown and stem gasket |
| 0F155BAA3 | case back gasket - case back gasket |
| HK08B | band - leather band |
| 06S01DGH | others - hour hand |
| 06S01DGM | others - minute hand |
| A130AS | others - push pin (for lb) |
| 122110 | others - machine code |
| 12211170XS14 | others - dial |
| 1221586000A | others - case |
| 82731170 | others - case ring |
| 0351117 | others - winding stem |
| 06SS05VG | others - second hand |
Caliber 1221
