Quite a good likeness I think...
The guys at TrekMovie have found there are to be similar models of the rest of the TOS bridge crew.
And that's not all they do, no idea when these became available but The Hamilton Collection also have a couple of little ship diarama models for the 40th anniversary, one TOS, one TNG:
TOS: Elaan of Troyius
TNG: The Best of Both WorldsBoth are available at The Hamilton Collection's website for about forty dollars each.
The original article on the bear, including ordering information! can be found here.
Thanks to Daren Dochterman for supplying the punny title in his comments over at TrekMovie.