I am selling this because my child passed the exam. There are no markings, and the inside is clean, but as you can see in the third photo, the back of the cover is slightly bent. Please consider purchasing with the understanding of the above. Due to the nature of the product, we are selling it as NLNC (No Returns, No Claims). If you have any questions, please comment. This is a practice problem book for the Mathematics Certification Level 4 exam, containing practical problems. - Title: Mathematics Certification Level 4 Exam Problem Book - ISBN: 978-4-415-32144-0 - Included: Red bookmark Thank you for looking.