There was the white, "finished looking" prototype that was shown at CeBit in 1994 and appeared in all the Amiga magazines, but afaik this has never been seen since, and nobody knows where it went. Sadly, it probably ended up getting trashed as Commodore went bust 2 weeks later, or maybe still lurks in a box in some dusty warehouse to this day. Nobody seems to have seen it since.
There was also another one that was much less complete and was just a dark grey case with no logos on or anything, apparently that odd Merlancia guy (Ryan?) had it mounted on the hood of his Delorian iirc back in around 2001! (Though he was full of %&$#, so maybe not, but images of it do seem to be credited to him).
