As above, carbon fibre door mirror from Group A Escort Cosworth/WRCar/F2/Kit Car/Maxi.
Driver's side only, I don't have the pair, but perfectly suited to a track or rally car if you only want the one as many do. In reasonable condition, couple of marks in the lacquer, but would easily polish up I'm sure.
£60 inc. UK postage. Open to offers.