watching these interesting and romantic pictures I've got the idea that this 1100 may be a 508 sport derived; rear wheels are Fergat, like Balilla sport; the tail shape looks like Coppa d'oro; the position of passenger's left arm, around driver's back, is exactly the same that 508S'users were forced to assume because of the fact that passenger seat was positioned reader than driver's one. Not strange it's called 1100, because the 508s had introduced the 1089cc engine in MM. I have no proves, just my ideas.