You will have to call S&W for the date.
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.
@1969
Proofhouse.com has Colt serial number tables.
1959
and the model is..................................
1929
1970
You did not list the serial number. The serial number should follow this example - CCB8765
made about 1958
Proofhouse.com has Colt sn data.
Manufactured in 1950
1977