The Seiko 5Y23-7A20 is a watch model based on the 5Y23 movement.
Parts List
| 280WB7JN01 | crystal |
| 280WB7JN | crystal |
| 35MK9NN1 | crown |
| 35MK9NS1 | crown |
| DH0100B01 | case back gasket - crown and stem gasket (4h) |
| DH0100B0 | case back gasket |
| FE288BA11 | case back gasket - case back gasket |
| 86591190 | crystal gasket |
| 86591530 | bezel gasket - plastic gasket for bezel |
| G1388J | band |
| G1388L-LKG | band - link |
| G1388L | band |
| G1388L-PB1 | clasp - parts for buckle/clasp |
| G1388L-BK1S | clasp - clasp |
| 3AA125F1A6S | others - second hand |
| 11SC43T2 | others - second hand |
| 3AA125F3A6S | others - second hand |
| 3AA125F3ANG | others - second hand |
| 0351105 | others - winding stem |
| 12SC23T2 | others - second hand |
| 82812510 | others - case ring |
| 0801722 | others - date dial |
| 5Y237A20 | others - case back |
| 5Y237A2061 | others - case |
| 5Y237A2098 | others - case |
| 5Y237A4LXB13 | others - dial |
| 5Y237A4LXS13 | others - dial |
| 5Y237A5LXB13 | others - dial |
| 5Y237A5LXN14 | others - dial |
| 5Y237A5LXS13 | others - dial |
| 82342451 | others - bezel |
| 82342459 | others - bezel |
| A180BS | others - push pin |
| 12SC23T1 | others - second hand |
| 12P11MSM | others - minute hand |
| 12P11MKM | others - minute hand |
| 11P75MSM | others - minute hand |
| 11P75M3M | others - minute hand |
| 12P11MGM | others - minute hand |
| 12P11MSH | others - hour hand |
| 12P11MKH | others - hour hand |
| 11P75MSH | others - hour hand |
| 11P75M3H | others - hour hand |
| 12P11MGH | others - hour hand |