What doesn't look right to you terrier? I have the opportunity to purchase this for a low price, but want to make sure it's good. I don't have much experience with Clemente autos. The signature is on a poster given out to fans on Roberto Clemente Night on July 24, 1970. I have found several other of these posters online that were signed by Clemente and have been authenticated by either PSA or JSA. The signatures looked pretty close when I compared them. Here is one of those examples below:
it is mostly an issue of slant and stiffness of the letters are off in my opinion, compared to the other poster, and the ball shown below. run it by PSA if you like, maybe it will pass, but personally, I do not like it.