What is the difference between CGC and PGX grading?

CGC (Certified Guaranty Company) and PGX (Professional Grading eXperts) are the two leading comic book grading services. CGC is generally considered the more established and widely recognized service, with a larger database and broader acceptance in the collecting community. PGX uses a slightly different grading scale and emphasizes restoration detection. Both services encapsulate comics in protective sleeves and assign a grade based on their condition. The choice often comes down to personal preference and the specific features of each service.