Without the benefit of a larger scan in the OP, my observation is that it doesn't appear, to me, to be authentic. Too many inconsistencies in the style and flow of the signature. I don't think it's real. The Wilder in the second cast picture signature looks good to me.
Don't know if this helps but I have seen his signatures similar to yours. Although the last couple of letters in his last name appear a bit rushed it still seems to be authentic. Here is a PSA authenticated example.