The age would be around 1949.
Made in 1951
about 1929
made about 1919
50-500 usd
In 1926 for the police positive .38 and 1919 for the police positive special.
value depends on overall condition. if your colt is a police positive special, made about 1921
Proofhouse.com has Colt sn tables.
If this is a .38 cal (check the markings on the frame and barrell) it is chambered for .38 caliber. If it is a Police Positive ammunition would be the .38 PP If it is a Police Positive Special you could use .38 PPS Check with any reputable gun shop/dealer or range and they'll give you the information you need.
somewhere between 1908 and 1966. A serial number might narrow it down.........
Your colt police positive special was made in 1972.
Colt police positive .38 was made in 1919 and Colt police positive special was made in 1914.
It should have the caliber marked on the barrel,such as"38 Colt New Police".