Police positive?

Question
I have a pistol that says: Harrington & Richardson Arms Co.
                          Winchester Massachusetts USA
On the left hand side of the barrel it's marked:
                          38 S&W CTGE.
The front part of the pistol breaks forward for loading and it holds five {5} rounds. Can you provide me with any information about this type pistol? Thank you.  

Answer
Mr Wolff,

Old guns are really not my thing.  This from Chuck Hawes:

Smith and Wesson devised this black powder cartridge in 1877. It was intended for the relatively weak top-break Smith revolvers of the period. Colt also chambered revolvers for the cartridge, which they called the .38 Colt New Police. As I understand it, the only difference was the flat-nose lead bullet loaded in the Colt version of the cartridge. (The S&W version used a 145 grain round-nose lead bullet.) Both claimed a muzzle velocity (MV) of 730 fps and a muzzle energy (ME) of 173 ft. lbs.

There was also a variation of the .38 S&W called the .38 Super Police or .38/200. These used a 200 grain LRN bullet at a MV of 620 fps with 176 ft. lbs. of energy.