I have been told this revolver is a Pre-Model 50, a Pre Model 36,a Pre Model 14 or 15, and others. I have not yet sent off the letter to S&W to get to the bottom of it, but probably will invest the $50. In the meantime, any opinions ? Idea of value ? I purchased it from a private seller in 1969, and carried it off and on for years as a detective. The wooden grips are original and have the gun's serial number stamped on the inside of the grips. Thanks.