I like sucker posts............
I do not think this car will bring 7 figures. Sold for much less to Frank a knowledgable (though be it shrewd) collector. I would speculate he doubles his money but the car doesn't clear $650,000. His 930 sold inexpensively. I also think $650,000 is a very big chunk of cash.
To Raj's question I think the 69S would be more valuable because it was his DD. Now, the next question would be how do you measure value.