You will either have to provide the serial number or call S&W.
198x.
Impossible to answer without the serial number.
@ 30 years old
@1974
Need the sn to answer
Would need model name to answer.
45 years old
No known published sn data
c.1967
The Model 16 was not made in 38 Special.
If you contact Smith & Wesson, they will give you that information.
1974.