You did not provide a serial number.
about 1924
Proofhouse.com has Colt sn data.
Proofhouse.com has Colt sn data.
this question should be under Colt Firearms section
Colt army special was produced in 1916.
418306
That Colt police positive special with serial # 594826was manufactured in 1951.
if a New Service model made about 1920
if double action revolver it was probably made about 1923
Proofhouse.com has Colt sn data.
You will have to call Colt to find out.
1950