1921
It should have the caliber marked on the barrel,such as"38 Colt New Police".
$150-$200 and up.
Only Colt would know.
value depends on overall condition...............
value depends on overall condition. if your colt is a police positive special, made about 1921
50 - 300 usd
The age would be around 1949.
Yes
Caliber can not be idenitifed by sn. Take it to a gunsmith if it isn't marked on the frame or barrel.
Made around 1971. Value is decided by condition,markings,and history of the gun.
38 special unless it's a 38 S&W, then 38 S&W cartridge. should say on barrel.
made about 1929