Colt 38 special police edition s/n 18759
Colt police positive .38 was made in 1919 and Colt police positive special was made in 1914.
It was made in 1924.
That Colt .38 special police was produced in 1951. (571500 - 607399)
Your colt police positive 38 was produced in 1937.
Colt police positive special was made in 1915
A Colt police positive .38 with that serial number was made in 1931 and a Colt police positive special with that serial number was made in 1928.
A Colt police positive .38 with that serial number was made in 1930. A Colt police positive special with that serial number was made in 1928.
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In 1926 for the police positive .38 and 1919 for the police positive special.
Depends on your intended use.
If it is a Colt police positive special, it was produced in 1910.
Your Colt official police special was made in 1956.