It will be on the bottom of the hand butt, or inside the cylider crane area.
No such serial number in Smith and Wesson data.
Check the butt.
1980
1974
1980
No serial number provided. Serial # 426742
You can not tell the model number with just the serial number.
You will have to provide the serial number and a detailed description of the weapon.
Look on the butt of the revolver.
Impossible to answer without the serial number.
On the butt.
@1969