Jerry:
That's very complicated. A common fake autographing style is called "autopen" which is basically what you see when notices are sent out in mass bundles and signed by a CEO, politician or something - it's just a computer generated repetition of the same signature. What you really need to look for is pressure points on the signature and also how the signature compares to known versions of that particular persons' signature, but it's very difficult for the untrained eye and as I said, quite a bit more complicated than just what i've said. If you get the chance, watch shows like "Pawn Stars", they have forensic document examiners on there all the time and you can learn a lot about how they go about verifying such signatures.
Cheers,
Adam.
