Smith & Wesson Model 25-2 "Model 1955", .45 acp. cal. double action revolver.  Serial #N450627, mfg. 1977.  Excellent condition.  6" barrel has excellent bore, patridge-style front and adjustable rear sights.  Barrel is marked ".45 cal. Model 1955".  Barrel and frame have near 100% blue.  Cylinder has 98% finish with faint index marks.  Case colored trigger and hammer.  Smooth laminated contoured grips are excellent.  Double action works fine with tight lock-up. Gun appears fired very little. Black S&W plastic factory box, but does not match gun or have end labels. Gunrunner West item.