I'm trying to find information on Mod 36 Smith & Wesson .38 Special 5 sgot revolver. It belonged to the late father of a coworker. I'm trying to help her find out what it is worth. Anyone have access to Smith & Wesson serial numbers guides? I would like to buy it from her, but I want to be sure I am not cheating her and her family. Any help would be greatly appreciated.