That's the right year, and I know you know the car as I've seen your posts elsewhere!
But you haven't given me exactly what it is yet (it has a code, which you know and I need.)
I see the discussions about Ghia as well, but although Ghia were involved in VW prototypes around that time this doesn't look much like a 1957 Ghia design to me. Anyway, since I didn't ask for that in my original question I don't need any proof whether it is or is not Ghia, but it would be nice to know one way or the other in case you can find any proof other than the cobbles!
Locked for your reply then I can give you your point and move this one.