Call S&W and they will call you
Check the butt.
No serial number provided. Serial # 426742
1980
No such serial number in Smith and Wesson data.
You can not tell the model number with just the serial number.
1980
1974
You will have to provide the serial number and a detailed description of the weapon.
On the butt.
Impossible to answer without the serial number.
Look on the butt of the revolver.
@1969