I believe it's unused, but I can't say for sure. It's been stored at home for a long time, so there may be some age-related deterioration. It's not noticeable at first glance. However, upon closer inspection, as shown in the last photo, there might be slight, faint discoloration. Since it's not something you spread out by inserting it into an obi, I don't think it will be a concern. This is a used item, so there may be minor oversights. Please understand this before purchasing. Price reduced.