I don't recall a J frame S&W in 45 cal.......of course I can be wrong
Look on frame inside the cylinder area to find the model number of a Smith and Wesson 357 mag snub 2 in stainless barrel
The frame size of a Smith and Wesson model 66 is K.
The smith and Wesson model 10 has the K service frame.
50-300 usd
The frame.
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.
The Smith and Wesson K frame revolvers were made from 1946-1983.
Need to know barrel length and ALL markings.
look inside cylinder well for model near rear of barrel in frame
Standard Catalog of Smith and Wesson Firearms by Supica and Nahas History of Smith and Wesson by Jinks.
Next smallest to the X frame.
K frame