What information on j Stevens single barrel 410 shotgun break down sn 4770 springfield made by j Stevens chicopee falls mass usa?

I'm having the same probem. Except mine has matching numbers (33NL) stamped on the bottom of the barrel and inside the triger housing. No other numbers Mine also says "Springfield" manufactured by "J.Stevens Arms Company" Chicopee Falls, Mass. U.S.A. Other markings - top of barrel left side -proof tested 410 bore/---3 inch chamber---/ top of barrel right side - Selected Forged Steel. Any info. call.....317/523-1438