I purchased this to perform accurate maintenance and was practicing at home. However, I encountered some issues during the work, and while researching, there are some stains that seem to have occurred. I've flipped through it, and I haven't found any writing or markings. Thank you. [Important Notes] * I am an amateur, so I may overlook minor stains or scratches. Please check the condition of the item in the photos and understand that this is a private transaction before purchasing. * Values differ from person to person, and I cannot guarantee 100% accurate information. Please refrain from purchasing if you are sensitive to details or seek a perfect item; instead, please purchase it at a store. * The color of the images may differ from the actual item due to lighting reflections or camera specifications, and may vary depending on your environment. If you are concerned about the color or have any other questions or shipping method preferences, please be sure to comment before purchasing. We do not accept opinions, refunds, or returns after purchase. Before shipping, we will check the condition of the item, save images, and take measures to prevent swapping. Thank you.