The Seiko 2A23-0390 is a watch model based on the 2A23 movement.
Parts List
| 190W77HR | crystal |
| 190W77HR01 | crystal - crystal |
| 32M13DA1 | crown - crown |
| 32M13NA1 | crown |
| 0F150BAA | case back gasket |
| 0F150BAA1 | case back gasket - case back gasket |
| 86571131 | crystal gasket - plastic gasket for crystal |
| 86204931 | band - other |
| G5079C | band - metal band |
| G5079C-LKG | band - link |
| G5079C-PB1 | clasp - parts for buckle/clasp |
| G5079C-BK2G | clasp - clasp |
| 3BA075F1BNG | others - second hand |
| 07SC17NG | others - second hand |
| 07S43DAH | others - hour hand |
| 07S43DAM | others - minute hand |
| 0801298 | others - date dial |
| 0884141 | others - holding ring for dial |
| 2A230390SA | others - case |
| 2A230630XN14 | others - dial |
| 2A2310 | others - machine code |
| EB0055B01 | others - crown and stem gasket |
| 81504699 | others - screw |
| 82333259 | others - bezel |
| 0354073 | others - winding stem |
| 81181459 | others - bracelet fixing pipe |
| 81604259 | others - bracelet fixing pin |
| 81604219 | others - bracelet fixing pin |
| 83138950 | others - case ring |
| EB0055B0 | others - crown gasket |
| 190W77HR | crystal |
| 190W77HR01 | crystal - crystal |
| 32M13DA1 | crown - crown |
| 32M13NA1 | crown |
| 0F150BAA | case back gasket |
| 0F150BAA1 | case back gasket - case back gasket |
| 86571131 | crystal gasket - plastic gasket for crystal |
| 86204931 | band - other |
| G5079C | band - metal band |
| G5079C-LKG | band - link |
| G5079C-PB1 | clasp - parts for buckle/clasp |
| G5079C-BK2G | clasp - clasp |
| 3BA075F1BNG | others - second hand |
| 07SC17NG | others - second hand |
| 07S43DAH | others - hour hand |
| 07S43DAM | others - minute hand |
| 0801298 | others - date dial |
| 0884141 | others - holding ring for dial |
| 2A230390SA | others - case |
| 2A230630XN14 | others - dial |
| 2A2310 | others - machine code |
| EB0055B01 | others - crown and stem gasket |
| 81504699 | others - screw |
| 82333259 | others - bezel |
| 0354073 | others - winding stem |
| 81181459 | others - bracelet fixing pipe |
| 81604259 | others - bracelet fixing pin |
| 81604219 | others - bracelet fixing pin |
| 83138950 | others - case ring |
| EB0055B0 | others - crown gasket |
Caliber 2A23
