I have an old octagon barrel, very similar to a Remington #6, .22 shorts only that I cannot identify or establish value. It has no name or serial # on the rifle but I was told my an vintage gun collector he thought it was an old Remington gallery rifle. It is a single shot, hammer and you cock the hammer and pull back the breech plate to insert the round. After firing, you pull the trigger back, then the breech plate and then the ejector pulls the brass out. I am guessing it is a turn of the century firearm. Light checkering on the handle and iron butt plate. Front sight is dove tailed on and the only marking on the outside of the rifle is a small circle (about the size of a pencil eraser) with a possible R stamped on it. The mark is approx. 1" ahead of the loading breech. Anyone have any ideas???