Hello, First post. Complete NOOB, please bear with me. This is my first Smith. Ser.# 32177x It's a 6 shot, 38 s&w ctg. 5 inch barrel- measured from face of cyl. Large ejector knob. 5 screws, S&W stamp and Made in USA on rt. side. Round blade front sight. Somewhere along the line it got nickel...