IoM Corner sign http://www.cmrf.co.uk/smf/index.php/topic,9887.0.html?PHPSESSID=a32d4821608315e5b099b263ad614306
I bought a nice replica sign here ( http://ttlegends.com/ ). They are fairly thin, so a little fragile shipping-wise (mine had a tiny corner bend which I fixed without issue), but are really nice quality. I'd like a real one, but not sure I could spring for that much (famous corner though).