Call S&W and they will tell you when it left the factory.
No sn=no answer.
No way to answer since the sn was not provided.
About 1970.
@1964
Can't be answered since you did not provide the serial number.
It would need the serial number to answer or go to proofhouse.com and look it up.
38 special
1902
Around 1962
No serial number provided
@ 1974
Would need serial number to answer or go to proofhouse.com with serial number and look it up.