[Historybuff]

I believe it was a snub nose revolver--the favorite carry of private eyes in grade B detective movies

Now us lawyer types will have to see when Colt copyrighted that!

Wickipedia says it came in several calbers. Guess it's not around any more, but hey, it could come back...
---------------------------the below from the all-knowing Wikipedia----------
The Colt Cobra is a small, but powerful short-barrelled revolver chambered in .38 Special, .32 Colt New Police, and .22 LR formerly made by Colt's Manufacturing Company.

This revolver is the same overall size and configuration as the famous Colt Detective Special and uses the same size "D" frame. However, the Cobra's frame is lighter weight aluminum-alloy as compared to the all-steel frame of the Detective Special. The Colt Cobra was produced in calibers .38 Special and .22 LR. The Cobra .38 Special was available in 2-inch and 3-inch barrel lengths. The Cobra in .22 LR was available only with the 3-inch barrel.