Picked up a TM serial number G17 today at one of the local pawn shops. Unfortunately, it didn't have the original box but it does have the original black internals, two pin frame, uncaptured guide rod, and an original NDF magazine. I probably paid a little more than I should have for it, but I just couldn't risk letting it sit a few days so they would come down on the price. This is the first one I have ever personally seen with the uncaptured guide rod. The PTOOMA Guide dates it at around January of 1990.