Smith & Wesson refered to this model as one of their "Kit Guns" meaning you could carry in something the size of a fishing tackle box. The M#650 was stainless steel, small frame (their "J" frame), with a round butt and a 3' barrel.
Depends on the model. Look in the crane area.
The numbers AVU6432 are the serial number to your Smith and Wesson handgun.This indicates that it was made in July 1987.as to the model of Smith and Wesson you have.Open the cylinder of the revolver if thats the case and look on the inside of the crane.This will tell you what model you have.If you have a semi-auto pistol the model will be marked on the slide/or frame.
You will need to find a copy of the Standard Catalog of Smith and Wesson for pictures.
No model numbers used before @ 1957. After that, look inside the crane/yoke area.
Call S&W with the serial number or look it up in the Standard Catalog of Smith and Wesson, 3rd ed by Supica and Nahas.
Go to Smith and Wesson's website and download/request a manual. Find a bookstore and look for a series of books by J.B. Wood on fireams disassembly.
Look on frame inside the cylinder area to find the model number of a Smith and Wesson 357 mag snub 2 in stainless barrel
Open the cylinder and look inside on the frame where the crane assembly rests.
You must provide the sn or call S&W with it. The Smith and Wesson model 19 3rd change(19-3) was made by Smith and Wesson from 1967-1976.The serial number should be found if you swing the cylinder out and look at the yoke just below the barrel.
Standard Catalog of Smith and Wesson, 3rd, ed.
look inside cylinder well for model near rear of barrel in frame
A Smith & Wesson model 66-1 with a serial number 36k7162 was made between 1990 and 2000. The exact date of manufacture can be determined by contacting S&W to have them look it up.