I have a genuine black from the factory S1, one of only two known so far, there could be more!! ,the other known one belongs to Mark( bonkers) who owns the trade centre in wales & that one used to belong to the princess of wales, mine was used by Prince Michael of kent & its believed later used as a decoy car.
My car is B444 AAR, car has been looked over by various RS Owners club registrars & i have a letter on Royal headed paper as to the previous owner, & lots of history.
Im happy to answer sensible questions from anyone genuinely interested . Tony.