Had a bad day at a Gunshow yesterday, to drown out sorrows I bought this ancient Single Shot .12 Gauge Shotgun, vary worn on the outside, but the bore is actually vary good, it locks up surprisingly well, not an ounce of give. But my question is... WHAT IS IT? I've searched and I can't find this exact model wit the little wing on the side, my other question is... Is it safe? its quite old, when I took off the foregrip there where some patent dates from like 1888 to 1895, as well as a larger "M 1855", the gauge was stamped in a vary odd spot under the barrel. Help?