Call S&W and they will tell you when it left the factory. It could have been made a week to a year before that.
and the model is..................................
1977
1969
Impossible to answer without a serial number.
No serial number given = no answer.
if your pistol is of the model 1911 with serial number 189558 then it was made in 1917 by colt. If it is the revolver then the serial number is to high for the 1917 revolver.
1979
1986
K prefix indicates 1950 manufacture.
80-81
About 1973
No such model in the S&W line.