A buddy has asked me to help him figure out the originality of this .44 caliber Colt Dragoon cylinder. I have some ideas, but would like to hear from people who are more versed in Colt revolvers than I am. There are no numbers stamped on it that I can find. There is a scene engraved around the cylinder along with "W. L. Ormsby Sc. N.Y." below the engraving. It also has "COLT'S PATENT" and "MODEL U.S.M.R." It appears to have some age to it. Any input would be appreciated!