Someone over at smith-wessonforum.com might be able to tell you.
The lower the serial number the younger the pistol is
@1956
What model?
Depends on the model and serial number.
NO
Go to: www. proofhouse.com with serial number.
1922
1978
Buy one of the books that has published serial numbers for that particular pistol.
This was made in 1969.
1978
Will need model name to answer.