The Seiko 8123-5259 is a watch model based on the 8123 movement.
Parts List
| SA7W42GN00 | crystal |
| 35M82NA1 | crown - crown |
| 35M82NS1 | crown - crown |
| 0A2800N01 | case back gasket - case back gasket |
| 0A2800N | case back gasket |
| 86572600 | crystal gasket - plastic gasket for crystal |
| Z1205G | band - metal band |
| Z1205G-LKG | band - link |
| Z1205G-PB1 | clasp - parts for buckle/clasp |
| Z1205G-BK1G | clasp - clasp |
| 11C90ALH | hand - hour hand |
| 11C90ALM | hand - minute hand |
| 8123525975 | others - case |
| 81235290XG18 | others - dial |
| 81239 | others - machine code |
| 82731260 | others - case ring |
| A200BS | others - push pin |
| 0354765 | others - winding stem |
| 0801622 | others - date dial |
| 13SC04A2 | others - second hand |
| 0Z0060B01 | others - crown and stem gasket |
Caliber 8123
