I would guess mid 70's, but I do not have a book here to check. Post the question here http://smith-wessonforum.com/eve and you will have an answer quickly and also some good reading.
1980
K 7981 smith&wesson
No serial number = no way to answer.
Need the serial number
No serial number provided.
No serial number provided.
No serial number provided.
You will need to add the model of Smith and Wesson to your serial number to get the correct year of manufacture.
what is the serial number ????
@1978
@1971
Impossible to answer without a serial number.