I purchased this for a university class, but I hardly used it, so I've been storing it. There are no markings or writing. ・Please understand that this is stored by a private individual. ・We have inspected the item, but there may be oversights. Please understand. ・The color of the product may appear darker, lighter, or different depending on your device. The representation of the color and condition in the images may vary, including minor scratches, etc.