I have a 21" stagecoach or messenger 12 gauge side-by-side, with Rabbit ear hammers. The patent is 488366, serial # is 146035, all parts of gun have the same serial #. It was mfg. on Dec. 20, 1892. It has a Damascus Barrell, and though the Barrell shows much usage, there is no rust and the Barrell is tight, hammers work fine, no cracks or breaks in the stock. Mfg. by Pioneer Arms C0. Can you help me on the value and if it is safe to fire.