The Naughtiest Girl Complete Collection. Enid Blyton.

 Box collection Titles : The Naughtiest Girl In The School, The Naughtiest Girl Again, The Naughtiest Girl is A Monitor, Here’s The Naughtiest Girl, The Naughtiest Girl keeps A Secret, The Naughtiest Girl Helps A Friend, The Naughtiest Girl Saves The Day, Well Done, The Naughtiest Girl, The Naughtiest Girl Wants To Win, The Naughtiest Girl Marches On.
 
All unread , no marks only number 2 has a slightly creased spine . 3518