Here is a Beatrix Potter "The Tale of Peter Rabbit and other Favorite Stories" set of 6 books in their case.  They are roughly 4 1/4" x 5 3/8".  The set of books and their case is in used condition with signs of use and age related wear.  There is wear, creases and some glue from the factory on the inside first page from the manufacturer.  There is a tear with tape on the cardboard case.