I was prettty suspect, but most of the stuff in the pile looks pretty good. I have seen several maris items that seemed to have changed a little at different times of his life.
the Maris is absolutely not authentic, in fact, its pretty bad. the Clemente actually has the correct slant, and the baselines of his first and last name intersect, as they do in authentic examples, but it is rare to see all of the letters formed, and it appears to be too deliberate. Also the Sisk and Veale are not even close, so I would stay away from this.