Can anybody tell me how to identify a model number on this Stevens 12 gauge? It has no model or serial number on it I can find. It is stamped J. Stevens Arms and Tool Company Chicopee Falls Mass. USA. As far as I can tell that makes it pre-1916, but doesn’t narrow down the model. The only other print I’ve found is on the top of the barrel and reads “Electro steel choke bored” It’s a single shot, break action 12gauge, with an ejector, exposed hammer, and thumb release. Also has a thumb screw to disassemble barrel from the gun.