The Seiko 5Y23-6120 is a watch model based on the 5Y23 movement.
Parts List
| 265T01AAS | crystal |
| 265W08LN01 | crystal - crystal |
| 35M82NA1 | crown - crown |
| 35M82NS1 | crown - crown |
| 0A2500B01 | case back gasket - case back gasket |
| 86574121 | crystal gasket |
| 86574080 | bezel gasket - plastic gasket for bezel |
| G1456J | band |
| G1456K-LKG | band - link |
| G1456L | band - metal band |
| G1456L-LKG | band - link |
| G1456K | band |
| G1456L-PB1 | clasp - parts for buckle/clasp |
| G1456L-BK1S | clasp - clasp |
| G1456K-PB1 | clasp - parts for buckle/clasp |
| G1456K-BK1G | clasp - clasp |
| 0351670 | others - winding stem |
| 82800261 | others - case ring |
| 0801774 | others - date dial |
| 0801776 | others - date dial |
| 0801777 | others - date dial |
| 0866554 | others - holding ring for dial |
| 0878524 | others - date dial |
| 5Y236120 | others - case back |
| 5Y23612061Z | others - case |
| 5Y23612075Z | others - case |
| 5Y23612098Z | others - case |
| 5Y236248XB14 | others - dial |
| 5Y236248XG14 | others - dial |
| 5Y236248XN14 | others - dial |
| 5Y236248XS13 | others - dial |
| 5Y236258XS14 | others - dial |
| 5Y236368XS14 | others - dial |
| 5Y236368XS24 | others - dial |
| 5Y238 | others - machine code |
| 82353581 | others - bezel |
| 82353589 | others - bezel |
| A160BS | others - push pin |
| 11TE0AFH | others - hour hand |
| 11TE0AFM | others - minute hand |
| 13SC04A2 | others - second hand |
| 13SC04ES | others - second hand |
| 0Z0060B01 | others - crown and stem gasket |
| 11TC8NSM | others - minute hand |
| 11TC8NGM | others - minute hand |
| 11TH8NGM | others - minute hand |
| 11T30NSH | others - hour hand |
| 11T30NGH | others - hour hand |
| 11TH8NGH | others - hour hand |