That Colt police positive special with serial # 594826was manufactured in 1951.
police positive special made about 1920
about 1919
about 1925
It was manufactured in 1920.
Army special & officers model officers model special single action army & bisley revolvers police positive .38 bankers special police positive special & detective special
made about 1930
made about 1963....................
Proofhouse.com has Colt sn data.
Made about 1972, 37 years old, for a Colt police positive special with that serial number
If the Colt police positive special has the letter D in front of it, as in D952932, then it was produced in 1967.(D926000-D958499) about mid '60's
Look on the butt of the revolver