Inherited one of these some time back in great condition. Have a few questions about it that I'm hoping you can answer for me. First, there is an L on the side, but no serial #. The only other information on it is Worcester, Mass. Any idea as to what year it was manufactured? I'm thinking early 50's...'51 perhaps? Second, the barrel says "20GA CHOKE" and below that "PROOF TESTED", but no mention anywhere of the max shell length or shot size. Any ideas? I've put about 300 shells of 2-3/4 8 shot through her with no problem, but will she handle a 3"? What about max shot size? Not expecting 00/000. Lastly, I've thought about the "if I ever need to" scenario of firing slugs through her. As long as I stick to foster slugs you think I'll be ok, or just forget about the idea entirely? Any help is appreciated.