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:
View attachment 422187
View attachment 422188
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.