○ This item was used by a child at school. There is some dirt on the outside, but I think the inside shows no signs of use. ○ There are name markings, etc., on the back lower side of Mathematics A and Mathematics B. I will black them out before sending. (In the photo, I have erased them with yellow.) ○ In Mathematics A, there were a few pages with faint pencil lines. I have erased them with an eraser. ○ In Mathematics B, there is writing in red pencil on page 39 only. ○ In Mathematics C, there was writing in ballpoint pen and pencil on a few pages. I have erased the pencil parts as much as possible with an eraser. ○ I plan to use recycled packing materials. ○ Immediate purchase OK. ○ No pets, no smoking.