I purchased this for a university class, but it turned out I didn't use it at all, so I've kept it stored away, unused. There are no markings or writing in it. ・Please understand that this is stored by a private individual. ・I have inspected the item, but there may be oversights. Please be aware of this. ・The color of the product may appear different (darker, lighter, etc.) and the condition (minor scratches, etc.) may appear different depending on the device you are using to view the images.