Posted by Drew Hause on April 28, 2020, 1:11 pm, in reply to "How old is it??"
Welcome Duane. SN 55050 E (for ejectors) would be 1923. S55050 E would be 1949, after Marlin acquired the Hunter Arms Co. The top of the right barrel would be marked LC SMITH - 12 GA. - Field - FULTON, N.Y. U.S.A.