hi,
like nick said, it is what it says. i went to see the car and the owner who had it at the time, who was the guy that developed and put it in the car, it is the genuine prototype roof and like the advert says, was removed from the rotten early shell and put on what it sits on now. years ago i fetched a car and a trailer full of spares from someone who had legitamately bought a base unit from rover ( a series 1 ) and fitted it with parts which, shall we say he borrowed from rover and took him a few years to acquire the parts. it looked like a series two, but battery in front, series one bonnet, series 1 loom but most parts were series two.
ian