Can anyone ID this? My step dad gave me this. It was his great grandfathers. We think it’s some kind of hand anvil used at the vise. 5.75 lbs. any help is appreciated. made of wrought iron. 

With a round shaft it wasn't made to be used in a vise.   Can you tell us how you identified it as wrought iron?  The shape looks more like a casting.

Looks like a big round punch used under a big steam hammer.

Would that have the bevel on the bottom face and the taper?  I can go through the 100+ year old Sears Roebuck catalogs this weekend but can't report if I find something similar till Monday.

It could be used as an anvil. Mount it up and hit some hot steel on it. It's pretty interesting. As to what it's original purpose I'd only be guessing so I think I'll wait a bit before I take a stab at it.

Pnut

Perhaps it’s for bucking copper boat nails?

Looks like a bucking bar to me, too

Since bucking bar came up...a little photo just to remind you that your job could be worse...

Yes you could be on the inside of that box girder when they were putting all those rivets in!

When I was a young pup, I would help out in an automotive body shop. One of the "old timers" (Pappy) had one of those in his tool box. He said it was used to dolly out dents in the old cars when they still used lead to fill in & smooth out, before Bondo came along.

Thanks all! 

Sorry for the late reply. I say it’s wrought because it was my step dads great grandpa who used it for whatever last and it’s really old. Sat in the basement for 80+ years I believe. And there’s no casting marks and it’s soft like wrought iron. I’ve heard some it looks like a stamp mill shoe also. A bucking bar seems very possible. Beveled on both sides so a punch is possible too. It seems rather odd for a dolly but it’s possible. Thanks 

-Justin 

It's that chip that made me wonder about cast iron---which predates the long term European settlement of North America....

A shoe for  a stamping mill would have a positive method of attachment; at least for the ones I have seen.