Features and serial number.
No such model listed in the Standard Catalog of Smith and Wesson. You will need to call the factory.
By the features.
Impossible to tell model number by just the serial number.
Call Smith and Wesson with the serial number and the will tell you.
No way to tell model number from just the serial number.
No way to tell.
Serial Number on the butt.
You can not tell the model number with just the serial number.
The Model 19 is a 357 Magnum
@ 1965/6. Give Smith and Wesson a call and they can tell you.
Call S&W with the serial number and they will tell you
That will depend on what are you comparing it to.