The Seiko 5Y23-6240 is a watch model based on the 5Y23 movement.
Parts List
| 270W72LU01 | crystal |
| 270W72LU | crystal |
| 35M82NH1 | crown |
| FH2781B0 | case back gasket |
| FH2781B01 | case back gasket |
| 86580141 | crystal gasket - plastic gasket for crystal |
| 86178261 | bezel gasket - plastic gasket for bezel |
| G1488S | band |
| A100BS | others - push pin (for mb) |
| 0866554 | others - holding ring for dial |
| 0878523 | others - date dial |
| 5Y236240 | others - case back |
| 5Y236240Z4 | others - case |
| 5Y23638LX914 | others - dial |
| 5Y23638LXB14 | others - dial |
| 5Y239 | others - machine code |
| 82354623 | others - bezel |
| 0351670 | others - winding stem |
| 82800261 | others - case ring |
| 13SC04A2 | others - second hand |
| 0Z0060B01 | others - crown and stem gasket |
| 11CA4LGH | others - hour hand |
| 11CA4LGM | others - minute hand |