Serial # 4187, 22 short, very good 5 groove bore. This little revolver works well and looks great with over 80% nickel finish. The cylinder, barrel, left side of grip frame and both grips show serial numbers. The barrel is also marked "CAST STEEL". Right grip has a small chip at bottom. This is a collectors item, I don't think it will shoot due to excess headspace behind the cylinder. Free shipping.