First, it was a 1968 Ford Mustang GT 390 not a 1967 Mustang driven by McQueen in Bullitt.
http://themustangsource.com/timeline/67-68/68/bullitt/. Any collector or auction house who had done their homework knows it, and would not sell or buy it.
Second, the Cobb ball is obviously a bad forgery. Any collector or auction house who had done their homework knows it, and would not sell or buy it.
Yes, authentication is a touchy subject as is misrepresentation. But really, take a breather, please.
Ty Phelan