What is 'PGX' or the 'Professional Grading eXperts'?

What is 'PGX' or the 'Professional Grading eXperts'?

Mark Zaid (Owner of Esquire Comics) gives expert video advice on: What does a comic book certification company do?; What are the pros and cons of comic book certification? and more...

PGX is another independent grading company that was created after CGC. It also encases it's comic books in a type of plastic, will assess a grade, and also conduct a restoration check for your comic book.