looks like a sawyers anvil to me, but a recently made one, yes youll see many of the older ones that well taller with much more mass, this is because they were used to not only tune the saw blades, but to forge them as well, so you needed lots of mass for forging.
recent sawyers anvils are normally only used to tune or straighten saw blades, no forging because the saw is already cut out of thin sheet metal. so no need for all that mass, just a nice big flat and hard surface
but this is just my guess as i can not check how hard the thing is or look at it up close to see the sines of use