The sealed case protects the book from damage. Removal of the book from the case can cause damage as it requires effort, experience and in some cases a special tool. The sealed case also ensures the integrity of the grade assigned by the third party Grader, and ensures that no one replaces the book with a different, inferior copy.When removed, the value is diminished as the grade assigned is no longer certified and it will require re-submission to the third party Grader for total re-grading. Please visit my store for more vintage comics and toys! The item "ADVENTURE COMICS 278 CGC 8.0 WHITE PAGES SUPERGIRL SUPERBOY CURT SWAN DC COMICS" is in sale since Monday, December 6, 2021. This item is in the category "Collectibles\Comic Books & Memorabilia\Comics\Comics & Graphic Novels". The seller is "quasar-comics" and is located in Creston, North Carolina. This item can be shipped to United States.