I did not realize that the blued .45 Colt Mountain Guns were all that rare. In spite of my misgivings about the damnable internal lock, I bought one new in the box in 2004. Here's a snapshot:
However, that lock and the fact that these guns would show holster wear in time gnawed on me, and I commenced a search for another .45 Colt Mountain Gun, but in stainless. I found it.
This is my idea of the perfect trail gun. It's a 625-6, dating from February of 1996. Note that it has no internal lock, and to boot, it has the traditional hammer-mounted firing pin.
John