I recently acquired one of these m968 "Limited Edition" Springfield 1911 45's, so am gathering information. so far I have found these relevant posts on various web sites.
Post 88,with good photos, (must be you are a member to see photos.)
This one reveals the most factual but limited information
I hope this post will stir up some more information, and a loose group of owners of this little known Springfield.
Brad on Whidbey Island