I really do appreciate everyone's feedback. To answer a few questions posed, I was referring to my conversation with the loaner as to why she does not trade it herself for something newer and am doing this research for her hoping she will, and let my girlfriend use the newer gun that would hopefully be more suited for purse carry as well as home protection. now as far as the numbers go they are identical on the butt as well as the flat underside of the barrel and now that you bring my attention to it yes there is also the same number on the rear face of the cylinder. however there is a diamond at the end of the number there on the underside, and a star at the end of the number on the butt. Also on top of the barrel it reads "Springfield Mass USA Smith and Wesson Minted Feb. 6 06 Sept. 14 09 Dec. 29 14. That is it for markings other then the trade mark symbol you can see in the close up photo. So yes three matching serial numbers at all points mentioned.