Autograph or Not?

Just wondering, if I were to get a driver (eg. Peter Brock, Allan Moffat ect.) to sign something, where would be the best place to sign it.

The car itself (on the roof), the box, the Certificate Of Authenticity
or the card at the back of the window boxes that say the name of the model.

Thanks

[lindsay]

I have all my certificates signed by the drivers , it is a lot easier to take a certificate to a race track than a model.
If someone bumps into you and you drop the model then the model is worth nothing.
Plus I was once told by a dealer who sells Autographed items
that some inks can effect the paint around the signature on a model.
At the end of the day it really boils down to personal choice
as to what part to get Autographed.

[Hati]

Straight from the horse's mouth: here (http://turing.ibc.com.au/bianteforums/showthread. php?s=&threadid=46) is what I was told about the same thing you are after MadMaximus