The Seiko 5Y91-6030 is a watch model based on the 5Y91 movement.
Parts List
| 260N24JN01 | crystal |
| 35M98NA1 | crown |
| 0G0055B01 | case back gasket - crown and stem gasket |
| 0G0055B0 | case back gasket |
| 0H2395B01 | case back gasket |
| 0H2395B0 | case back gasket |
| WMA11G | band - leather band |
| WMA12G | band - leather band |
| 07SC02NG | others - second hand |
| 5Y916030 | others - case back |
| 5Y91603025 | others - case |
| 5Y916040X914 | others - dial |
| 5Y916040X924 | others - dial |
| 5Y916050XB15 | others - dial |
| 5Y916050XG15 | others - dial |
| 5Y919 | others - machine code |
| 82820880 | others - case ring |
| A160BS | others - push pin |
| 0354786 | others - winding stem |
| 13SC04A2 | others - second hand |
| 08TD2DAM | others - minute hand |
| 09T32DAM | others - minute hand |
| 08TD2DAH | others - hour hand |
| 09T32DAH | others - hour hand |
Caliber 5Y91
