What is a 'trimmed cover'?

What is a 'trimmed cover'?

Mark Zaid (Owner of Esquire Comics) gives expert video advice on: How does restoration affect a comic book's price?; Should I use tape to repair my comic books?; What is comic book 'color touching'? and more...

A trim cover is generally not looked upon as a means of restoration. It's actually looked on as a means of destruction. Those in the comic book community will trim the side of a comic book to try and make it appear to be more pristine than it was. Obviously cutting off, literally cutting off part of the comic book, is something that is not favoured and will significantly damage the value of your comic book if it is discovered.