I studied Clemente signatures since 30 years ago year by year, that signature is not authentic. There some of these balls around there, signature in the same spot...I saw few of them that failed authentication since the ball are from different eras, seems to be that this one was <60 era and PSA authenticate it but Im 100% sure that this ball was not signed by Mr. Clemente.
Im with you on the second one but I see differences between the two. A forger who has masterred a certain style will duplicate it. That is how they get caught. One looks ok, but when you see several identical, it raises flags. I still think the one you posted is good. but thanks for bringing this out, its an interesting topic. If you have more examples, please post them.