Call S&W with the serial number and they will tell you.
Someone over at smith-wessonforum.com will know.
1975-76
i dont know the age but i know the value its worth about 3 thousand if in good condition
1979
50-500 depending on specifics
Impossible to know the exact model from just the sn.
Someone over at smith-wessonforum.com will know.
It will be marked on the barrel
No way to really know.
Need to know the caliber in order to answer.
No way to know without the serial number.
don't know age, but I believe that model has been disconinued. It is a very good target pistol.