I also have a TBV2xxx serial 659 that seems to be a transition model. There are lots of people that dont really know about these pistols. Does anyone know how many of these were actually made? I called S&W and the born on this one is October 1988. A member of the S&W Collectors Association valued it at $600. It has 2 rubber/plastic baseplate 15 round mags that came with it. I had the bos but it was lost in a move at some point.Very good condition.