You did not list the serial number. The serial number should follow this example - CCB8765
@1969
1977
No serial number given = no answer.
1969
1979
80-81
You must call S&W
You will have to call S&W
1986
You must call S&W
Call S&W with the serial number and they will tell you.
You will have to call S&W for the date.