The Seiko 3423-0020 is a watch model based on the 3423 movement.
Parts List
| 190W04GN00 | crystal - crystal |
| 30M22NS1 | crown - crown |
| FH1980B01 | case back gasket - case back gasket |
| 86178941 | crystal gasket - plastic gasket for crystal |
| 86178940 | crystal gasket - plastic gasket for crystal |
| 86178470 | bezel gasket - plastic gasket for bezel |
| RA01A | band - band |
| KB040 | band - band |
| 07C22CKH | others - hour hand |
| 07C22CKM | others - minute hand |
| 08C32ASH | others - hour hand |
| 08C32ASM | others - minute hand |
| A110BS | others - push pin (for mb) |
| 0801515 | others - date dial |
| 0884644 | others - holding ring for dial |
| 34230030999L | others - dial |
| 342301301143 | others - dial |
| 34230300XS13 | others - dial |
| 34231 | others - machine code |
| 0354545 | others - winding stem |
| 3423002061A | others - case |
| 83348919 | others - bezel |
| 3423002061B | others - case |
| 08SC14NS | others - second hand |
| 0Z0060B01 | others - crown and stem gasket |
Caliber 3423
