The Seiko 5Y23-6A20 is a watch model based on the 5Y23 movement.
Parts List
| 270P09HN | crystal |
| 270W83HN01 | crystal |
| 270P09HN03 | crystal |
| 270W83HN | crystal |
| 40E23NS1 | crown - crown |
| 40E23NA1 | crown - crown |
| FE278BAA1 | case back gasket |
| DE010BAA | case back gasket |
| FE278BAA | case back gasket |
| 86564990 | crystal gasket |
| 86580950 | bezel gasket - plastic gasket for bezel |
| G1308C | band - metal band |
| G1308C-LKG | band - link |
| G1308G | band - metal band |
| G1308G-LKG | band - link |
| G1308S | band - metal band |
| G1308S-LKS | band - link |
| G1308S-PB1 | clasp - parts for buckle/clasp |
| G1308S-BK1S | clasp - clasp |
| G1308G-PB1 | clasp - parts for buckle/clasp |
| G1308G-BK1G | clasp - clasp |
| G1308C-PB1 | clasp - parts for buckle/clasp |
| G1308C-BK1S | clasp - clasp |
| 11PE3BGM | hand - minute hand |
| 11PE3BSM | hand - minute hand |
| 12P61DGH | hand - hour hand |
| 12P61DGM | hand - minute hand |
| 3AA125F1A6S | others - second hand |
| 3AA125F1ANG | others - second hand |
| 12SC39T1 | others - second hand |
| 11SC43T1 | others - second hand |
| 11SC43T2 | others - second hand |
| DE010BAA1 | others - crown and stem gasket |
| 0351105 | others - winding stem |
| 5Y236A20 | others - case back |
| 5Y236A2061 | others - case |
| 5Y236A2075 | others - case |
| 5Y236A2098 | others - case |
| 5Y236A4LXN14 | others - dial |
| 5Y236A4LXS13 | others - dial |
| 5Y236A50XG14 | others - dial |
| 82340411 | others - bezel |
| 82340419 | others - bezel |
| A160CS | others - push pin |
| 82812490 | others - case ring |
| 0801722 | others - date dial |
| 12P93BGH | others - hour hand |
| 11P23DGM | others - minute hand |
| 11P23DGH | others - hour hand |
| 12P93BSH | others - hour hand |