I have a friend who inherited an old Colt single action. He was going to try to shoot it and I talked him out of it until I found out some information about it. It has the serial#490xx on the frame and what might be a HN above it. It is a 5 1/2 inch barrel. It has Pat Sept19,1871 July 2, 72 Jan,19 75 on the left side of the frame, and US stamped beside it. The number on the trigger guard does'nt match the one on the frame. It has what looks like could be J6T8 on the right side of the barrel. I can't actually find anything that says Colt or the symbol anywhere on it, but I didn't have a magnifier handy. The grips were wooden and someone had tried thier hand at checkering them. Does anyone know what He may have?