Per the Richard Postman book "Anvils in America" The company started making anvils around the late 1880's, and went out of business in 1926, selling "well over 300,000" anvils...currently "one of the most sought after anvils by both professional and hobby smiths", ..."Rolls Royce of American Anvils"
your serial # says that it's the old style original serial #system used before 1915. the anvil is from the 1913 to 1915 period...closer to 1913 or so since the # is quite high. The last old style serial # documented is 218321, and that anvil was purchased in 1914, but Postman puts a +/- 2 year guess around the old serial # system
Advertisements from 1913 through 1923 show over 100,000 anvils sold alone during that period...
If I had to guess I would put that anvil in the 1000.00 range or more to the right collector. It's very clean and the face and edges are real nice. I'd carefully strip that grey paint off the anvil and stand with some low impact stripper.
No clue on the base either...you might want to strip it and look for some markings. If the base is a Hay-Buddin it would probably make the tool much more collectible imo...none of the old HB advertisements (and there are quite a few) show, or mention, a cast base that I see