I received an email from a friend this morning, with a photo of what appears to be a Porsche 911 with a Pagoda roof, he says. It looks like some concept model. It may be a non-traditional 911 roof, but it sure doesn't look like a Pagoda roof to my eyes--I don't see the requisite dip in the center. I understand this to be the Porsche 695, a/k/a T7 prototype) made in 1961.
This had me looking in my Bracq collection, and sure enough I found one of his Porsche design exercises from November, 1961. Looks like a 911 in the front, a W113 at the rear, and maybe a 190SL in the middle? As he was employed at MB at the time, my guess is this was just a free-thinking exercise. The 911 had not yet been introduced, and neither was the Pagoda--but I suspect some designs were well underway (with the first Pagoda sketches appearing in 1959).
Today, there is NO WAY that a competing designer/stylist would have been offered the opportunity to see development projects at another maker. That being said, the Bracq sketch sure as a strong appearance on the front to what would be the 911...