I'd have to guess that it was built in the early 1900s, if the picture was clearer, one could fine tune the guess. I started out with my shop with a #4 (heavy) Brown & Sharpe mill that looked similar to the one shown, but no cigar ---- it dated to 1912 or a little later, then got a #2 B&S universal of about 1906 vintage, used it quite a lot, then got a 1936 Cincinnati #2 universal, now, a #2 B&S universal from 1943 from the Mare Island auction.
Mills are us!