With this kind of case it's impossible to read the comic book, and it doesn't protect it from UV light. I prefer using covers that block UV light. This both protects it and allows you to read it.
You can read it (illegally) here: https://www.zipcomic.com/superman-1939-issue-1 And I dare say, someone spending 9 million clams on this comic book is more than likely going to have it sitting in a very UV-protected vault somewhere .. EDIT: Sorry - I didn’t realize that zipcomic.com is infringing the copyright - adding this note to point that out, but I will maintain my original link as intended. Better to read it o…
While you could store your collectable in a vault, many people enjoy displaying their collectables.