Colt Model 1851 Round Barrel Navy Revolver. A very nice Model 1861 Round barreled Navy Revolver in .36 caliber, serial number 17050, manufactured in 1864. The gun is overall brown, but very solid and tight, with a New York address. The cylinder scene is mostly visible. The grips show wear, but are quite nice. Dimensions: 7.5 inch barrel, and 13.75 inches long overall. Processing and shipping within the continental U.S. $55.00 plus 1.5% replacement cost insurance. Very good condition, with a brown patina overall. The front sight has been replaced with a blade sight. The gun is tight, and functions well. The edges are all sharp.