That is a beautiful colonial anvil. With the horn to the right, I think I can make out a very faint 0 in the center just above the waist, but it could be my imagination. This might be the middle number of a weight marking. The anvil has no pritchel (round) hole, which dates it to before 1830 . It has no table, or step, at the horn. This was added to anvils around 1780, so your anvil was made before that. I found a similar anvil in an old barn in Cobleskill NY. Mine is definitely English from the weight marks which are very faint and were only visible after cleaning with a wire cup brush. The absence od a makers mark was common as there were hundreds of anvil manufacturers in England at that time. There are anvils no better than yours sitting in museums.
If your anvil weighs 135, the English weight marking would be 1 0 23. Congratulations on your find.