BTW...you can test whether you have an original sig like that:
put some alcoholic solvent on a piece of tissue and VEEEEEERY CAREFULLY dab at the end line of the signature. If some black spots come off, chances are that you have an original.
I do not recommend to test it like that though, ya never know what the solvent does to the paper.....
I had a VHS tape with some sigs on it, and fortunately there were some smudges on the reverse side and with that method I was able to prove they were original...
