That's a Paragon that I would say was made shortly after the Folsom took over firearms production of the Baker and Batavia guns in 1919. I had a 12 ga Paragon that was SN 201040 although it had the typical F following the serial number that you see on most Folsom guns... Same game/dog scene design and level of engraving. Folsom purchased existing stock and so a number of the early Folsom guns were ones that were started by the Baker Gun & Forging Co and simply finished under the Folsom ownership. Would stand to reason your 16 ga is one of those.