How can I tell? Was looking at the actual times Madonna did a signing for these online. She did sign in the blue marker of these albums. But determining if the sig is a fake... idk
Madonna is not easy unless you have studied her signing patterns closely. She was not a frequent signer especially early in her career. I suggest you google "Madonna autograph" and look at the images. You will begin to see where yours does not match up.
BTW, I live in Cookeville. Not far from where you live.