I bought this .38 Special a few weeks ago and I have had the chance to examine and shoot it, and it is a great shooter. My question is just how unusual is the 3" RB 64. Also, it appears to have had some work done to it. The main spring has a curved back with a small S stamped on it, and does not look like an S&W spring. The curved back is milled flat where the tension screw hits it. This 64-3, with a 7D serial number would indicate a 1981 date, but it does not have a pinned barrel. This could easily become my favorite .38 shooter.