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..................................
1969
1977
No serial number given = no answer.
Impossible to answer without a serial number.
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.
K prefix indicates 1950 manufacture.
1986
1979
80-81
About 1973
No such model in the S&W line.