No way to know. S&W only supplies the date that a weapon was shipped. This was would have been shipped in 1975
1980
Call S&W and they will tell you when it left the factory.
1977-1882. The sn is wrong. Look on the butt, It should start with 10K or higher.
1968
Call S&W and they will tell you.
1951
@1984
80-83
Need a sn to date it.
1959
1962
@ 1952