Picked up this anvil the other day. I believe its an A&H, but there are no remaining markings at all. The sides have been beat on quite a bit and the base has lost some metal to rust (looks like it probably sat in something wet for a few years or decades). Dimensions are: 120lbs, 3-5/8"x15" face, 25-1/2" overall, 1/2" pritchel, 7/8" hardy (I think. It's a hair under 1" so I'm guessing with wear it was originally 7/8".), 10-3/4" height, 9-1/2"x11" base.

What does the underside of the heel look like?  If you can see traces from the fullering under a steam hammer---undulations; it's an A&H.  Postman says that sometimes that's the only way to tell between the two of them.

Sorry, had to go to my desktop and edit the post to add pics. 

Yeah, the indentations under the heel are what makes me think its an A&H. I'm not that knowledgeable about anvil history though, so I thought I'd get more learned opinions.

Arm and Hammer.  No trace of a serial number on the front foot?

No, the base was rusted pretty heavily. Nothing that will hurt function, but it's pitted too deeply to see any numbers.

take a closeup picture of the side of the anvil, horn facing right.  Sometimes remnants of a logo stamp can be seen.