A very pretty car - one of my all time favourites.
There was one that was successfully campaigned for many years over here in Australia by David McKay that may well be the rarest of all - it was apparently the only one never returned to the factory to have last minute homologation repairs carried out on it for it to comply with Le Mans regulations. From memory it was a fuel tank size issue (may be wrong on that).
Last I heard it was sold to a buyer in the UK who has converted it for road use. What a beautiful car.