Welcome to the Forum. Your gun is a .38 Double Action, probably a very early one, judging from the grips if they are original to the gun. If you can supply the serial number and verify that the same number is stamped on the butt, on the back side of the right grip panel, on the back of the barrel between the "ears" and on the back of the cylinder, and on the bottom of the barrel latch, we can give you better info. on the gun. Ed.