Well ive done some research using this site
http://www.lrsoc.com/forum/index.php...iew;article=24
which has revealed my 80 inch (car no. 06101688) was dispatched from the factory between the end of August to the beginning of November 1949.
Mine has the fishtail bumper mounts, early voltage regulator, early drawbar and riveted gear leaver cover. So its a 1950 model probably dispatched around September 1949. I think Diana was right on the money with that one.
Still cant sus out what colour she would have been (light or dark), original is long gone. Slowly continuing the strip down and still trying to get the steering wheel off.