I own a stainless revolver. On the right side of the barrel is stamped 45 CAL MODEL 1955. Left side is stamped SMITH & WESSON. On the frame when you open the cylinder is CLEARLY STAMPED N263216 below that is CLEARLY STAMPED MOD 28-2 It was willed to me. I know all about the .357 Highway Patrol and the model 25-2. What the hell does this serial number match? Why does S&W or anyone else know? Very frustrated. Aren't records of serial numbers kept to identify what this gun is? Any help would be appreciated. Was told by S&W this gun does not exist. Well I'm looking at it.