Starr 1858 44 caliber army. This revolver is often refered to as double action but to operate it has two triggers. There is the larger normal looking trigger and behind it is a second smaller trigger. The larger trigger rotates the cylinder and cocks the hammer while the second trigger fires the pistol. There is a sliding latch on the large trigger that when in the correct position will press the second trigger and fire gun. These were made early in the war and saw extensive service. This example has bluing on the barrel frame and cylinder. The action works and there are inspector's cartouches on both grips. The serial number matches on the frame and the cylinder.