I don't know anything about them.
I had taken a load of scrap to the scrap yard I had laying around .
While at the scrap yard. I noticed an anvil someone had brought in for scrap. I told the worker that I would like to have an anvil. He said you wanna buy the anvil ? I said if it's not too much I may be interested. He said he would weight it ,and let the guy in the office know when I went to pick up my money for the scrap.
I went to the office , they clerk there paid me for my scrap, and said that anvil will be $27.00 if I wanted it. I said sure. I paid him and left.
When I got home, I thought I would see who had made the anvil.
The name on the anvil is M&H Armitage mousehole forge. It weights 135 #
Long story short. It was hand made in Sheffield England in 1879 ! I think I got a good deal at $27.00