That sn could be for a Model 13. It could also be a sn for two or three other models. You will have to call S&W to find out unless you have the weapon. Buy 3rd edition of Standard Catalog of Smith & Wesson, written by Jim Supica and Richard Nahas. These guns were made for Police and Military use According to the book, your model was made in 1981. Model number is stamped on gun near the cylinder towards the front.
1974
Mid 80s
1969? 1969? 1969?
You will have to call S&W
With no other information supplied, 100-500.
Impossible to answer without the serial number. The serial number is on the butt.
50-500 USD or so
You will need to call S&W
the gun was made in 1984 it is probably a third generation
50-500 USD or so
Use a magnet. If the gun is nickel plated, a magnet will stick to it.
100-500 USD