Ford Torinos were on the list, or maybe a late 1960s GM A-Body car. But when a completely crusty 1973 Ford Mustang Mach 1 that hadn't been on the road since the '80s popped up, it was a done deal.

You might be thinking that it's hard to put a price on a car whose production included only one more identical sibling, but as far as this 1973 Ford Mustang Mach 1 is concerned, the dealer seems ...