I can't offer much help, but I also own a JN Scotts SxS; a 14-bore hammerless sidelock of very good quality. I have learned that JN Scott was the manager of the sporting goods division for Simmons Hardware in St. Louis, MO before the turn of the last century. My gun has no serial numbers, or patent dates and is marked London Fine Damascus on the top rib. I believe JN Scotts branded guns were made in England to be imported into the US and marketed thru Simmons Hardware, but have no other information.
