The Seiko 1421-5021 is a watch model based on the 1421 movement.
Parts List
| ES5N01SN00 | crystal - crystal |
| 0H1750B01 | case back gasket |
| RI027 | band - band |
| RI028 | others - other band |
| 08SC29NS | others - second hand |
| 1AA055A3BNS | others - hour hand |
| 2AA080A3BNS | others - minute hand |
Caliber 1421
