Unless the COA is from PSA/DNA, JSA, Steiner, TriStar, or GAI, it's next to worthless. The first two companies I mentioned, however, would be willing to authenticate the signature on the ball, at least, and their fine grading commands a premium during resale.
"They put me in the Hall of Fame? They must really be scraping the bottom of the barrel!"
-Eppa Rixey, upon learning of his induction to the Baseball Hall of Fame.
Motafy (MO-ta-fy) vt. -fied, -fying 1. For a pitcher to melt down in a big game situation; to become like Guillermo Mota. 2. The transformation of a good pitcher into one of Guillermo Mota's caliber.