This anvil has many features that make one believe it is not a standard or professionaly made anvil.
The most obvious is the "fifth foot" or upsetting block with pointed top.
Then there is the round hole in the top of the face. But that may be an added feature.
What makes this appaer primitive is the arches that would normally be part of a "church window".
They are also irregular and not well formed.
It is as if someone without experiance finishing an anvil was given the facilities and a crew to help make one.