1250.00 Colt 1855 Root Side Hammer revolver conversion in 28rf Ottawa Apr 15, 2024 - 6:45 PM jackfree Here is a very interesting antique revolver made by Colt. Model 1851 Root side hammer. It has been converted into .28 rimfire at some point of it’s life. Serial number matching. An “E.W.S” on the frame and cylinder.