The Seiko 5Y23-5030 is a watch model based on the 5Y23 movement.
Parts List
| ESAW32HN01 | crystal |
| ESAW32HN | crystal |
| 35M82NA1 | crown - crown |
| 35M82NS1 | crown - crown |
| 0A2700N01 | case back gasket - case back gasket |
| 0A2700N | case back gasket - dichtung -boden |
| 86581040 | crystal gasket - plastic gasket for crystal |
| B1553G | band - metal band |
| B1553G-LKG | band - link |
| B1553S | band - metal band |
| B1553G-PB1 | clasp - parts for buckle/clasp |
| B1553G-BK1G | clasp - clasp |
| 10C36KBM | hand - minute hand |
| 10C36KDM | hand - minute hand |
| 5Y235030 | others - case back |
| 5Y23503061 | others - case |
| 5Y23503075 | others - case |
| 5Y23503LXG18 | others - dial |
| 5Y23503LXS17 | others - dial |
| 5Y239 | others - machine code |
| 82803560 | others - case ring |
| B1553G-EPG | others - endpiece |
| A180BS | others - push pin |
| 0351670 | others - winding stem |
| 0801719 | others - date dial |
| 13SC04A2 | others - second hand |
| 13SC04ES | others - second hand |
| 0Z0060B01 | others - crown and stem gasket |
| 10C32KPH | others - hour hand |
| 10C32KLH | others - hour hand |