;)
I was so impressed by the speed and quality of the responses I got to my first-ever posting here that I thought I would throw in a "test" of identifying two one-off prototype GT's whose marque I do know. At roughly the same era, 1962-63 I photographed two GT specials at Silverstone, and will paste in three photo links here, to see if anyone can identify the two cars.
http://www.oldstox.com/images/guess%201.jpg
http://www.oldstox.com/images/guess%202.jpg
http://www.oldstox.com/images/guess%203.jpg
New to this forum's protocols, I hope this "quiz" does not count as trivial!
BTW, I recently corresponded with the mechanic who worked on Guess 1 / 2, cutting into the roofline to extend the driver's door to meet regulations.
Lastly, I noticed that there was not 100% certainty about that Diva; maybe it was Diva's first try-out of the Valkyr prototype?