No maker's marking. "66" marked on most parts, "crown/N" and "crown/AF" proofs on the barrel, frame and cylinder as well as a Liege proof on the cylinder. The lower right side of the frame is marked "4R. 3 S. No 48". Integral front blade and frame notch rear sights and fitted with two piece checkered walnut grips with steel buttcap and lanyard ring.