I have a 12 ga. L.C.Smith with SN 158xxx hammer gun. Hunter Arms Co. Makers, Fulton, N.Y. words Royal Steel on barrel. On the bottom of the left barrel are the letters C and numbers 4 and 2. L.C. name is on both sidelocks. According to serial no. lists, it could be either 1908 or 1937. I'm leaning towards 1937 but would like to be sure. Help appreciated.