I believe I replied to what I thought it was in my original post. Only three Colt percussion revolvers were made in large enough numbers to have a serial number in the 144000 range. The .44 caliber Model 1860 Army (7.5" or 8" round barrel), .31 caliber Model 1849 Pocket (usually 4", 5", or 6" octagon Barrel), and .36 caliber Model 1851 Navy (7.5" octagon barrel). Since he said his is .36 caliber that makes it an 1851 Navy. The capping channel was incorporated at serial number 118000+ on the 1851 Navy, so it is a correct feature for his revolver. As I said, it is either a very rare special order shorter barrel Navy or a barrel cut down from its original 7.5"" length. I will wager dollars to donuts that it is the latter.

John Gross