Koya Manekiya Geta

This item belonged to my grandfather, but I no longer need it, so I am selling it.
As you can see in the photos, the box has many scratches, but the main unit has no noticeable scratches.
I am not sure of its value, so I ask that only those who are knowledgeable about this item or who understand that it is a used item purchase it, to avoid any trouble.