There are several companies that grade cards and memorabilia professionally. Some of them have gone out of business in the past few years because there were too many such businesses jumping on the bandwagon. The top 3 are PSA, Beckett Grading, and GAI. There are several others that are very good at what they do, but the big 3 have pretty much cornered the market. Personally, I only use one-- PSA. They have a reputation that is unsurpassed and 9 out of 10 collectors or investors would rather have a PSA graded card than any other graded card. If you've ever put graded cards on your eBay "Watchlist" you have noticed that PSA cards consistantly sell for much more than any other card grading company. Of course, PSA does not grade cards for free, but once you join their Collector's Club, you should reap the rewards if and when you decide to sell your cards. You can go to PSA's website at psacard.com and have a look. I refer you back to my previous Post"Today's Cards vs. Yesteryear" where I showed an example of how your graded cards could be worth many more times the "Book Value" of raw cards.
Have fun out there!
