Immediately below, are just a few links to threads on Stephen Rocchi and Guaranteed Forensic Authenticators (GFA).

Since they started their sham operation nine years ago, I still have yet to observe one authentic autograph with their worthless COA.

Not one.

https://live.autographmagazine.com/forum/topics/ebay-mantle-dimaggi...

https://live.autographmagazine.com/forum/topics/roger-maris-forgeri...

https://live.autographmagazine.com/profiles/blogs/guaranteed-forens...

https://live.autographmagazine.com/profiles/blogs/guaranteed-forens...

Check out this laughable of Mickey Mantle and Willie Mays forgeries on a baseball listed by Ebay seller Jng1949.

Only $715.00 for this piece-of-crap.

Worthless COA from Stephen Rocchi and Guaranteed Forensic Authenticators.

https://www.ebay.com/itm/MICKEY-MANTLE-WILLIE-MAYS-SIGNED-AUTOGRAPH...