About 1959
1919-1922
1907-1909
1927
Yhe records I have show a Colt police positive .38 with that serial number as being made in 1908.
@1969
1970
1959
1929
and the model is..................................
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.
1971
made about 1958