Serial No. 10576. Standard revolver with round 3-1/2" barrel, .28 caliber, side hammer, spur trigger. Cylinder does not lock, but advances. Action is tight as new. Strong bore, but frosted. Fine little gun that retains approximately 30-50% original blue. Balance turning pleasing patina. Strong markings. Original walnut grips with approximately 75% original varnish. Manufactured in 1866.