My nephew has a hammerless 16 ga. sxs shotgun with Eastern Arms Company 101.7 on the right side of the frame and Springfield, J Stevens Arms, Chicopee Falls, Mass on the left frame.

Could it be a Stevens 311? I have a JC Higgins 101.7 sxs that is a Stevens 311A made in 1957. Any idea when my nephew's gun might have been made?