You will have to call S&W
1974
Mid 80s
1969? 1969? 1969?
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
You will have to call S&W since you didn't provide the serial number or post again with the serial number.