I just picked up an original Smith & Wesson Model 40 Centennial .38 Spl...which some refer to as a 'Lemon Squeezer' (although that terminology can be applied to some of their earlier revolvers. At any rate, this one is blued, has a flat latch, it's pinned, and has the original (smooth!) grips....very nice indeed. The s.n. is 212XX Any help will be GREATLY appreciated. THANKS!