while I don't know dick about Clemente's autograph, I believe I've read somewhere about the sharp angle (going up up up to the right) of the Tommy Dorsey ghost signed, as well as the double 66's.
Notice how all the Dorsey's go up up up to the right. The card doesn't...HMMMMM, could it be real? If you could see it through the card colors you might actually tell,
