Hello, Part of an estate includes S&W Hand Ejector 38 special nickel, 4” barrel. SN is 486XXX, 6 digits, no letters. 5 screw. No model info. Right side of frame “Made in USA” rollmark. The grips appear to be diamond checkered but the fit at the top rear is not flush so I suspect these were replaced? Interested in estimated manufacture date, if this was originally nickel plated (not sure hammer and trigger would have been plated by factory), and what I use for a Model on Pistol Sales Record (1905?, M&P K38?, pre-Mod 10?) Thanks for any help on this!
Robert