I made my first anvil over 20 years ago. If you were closer, I'd give it to you. Let me see if I can find a pic. ~150 lbs +/- IRC.
Horn was started but not finished (life intervened). Made out of 2" plate; welded the living crap out of it with my then-brand new Lincoln SP-175Plus welder*. I wanted to see what the operating cycle was, so I ran it hot until it gave up.
* That would make it 1999 or early 2000, so longer than 20 years ago.
ETA: As promised, here's some pics:
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See the shop press behind it? Made that as well. Same with the adjustable jack stand.
Anvil stand came from cut offs from a house(s) being built in my then-new neighborhood subdivision. The builders let me scavenge their dump piles.