About 15 years ago my son lugged home a huge piece of steel he'd found on the shoulder of the road along our property. It was 250+lbs.....I couldn't budge the thing, so I am totally guessing at the weight. It was apparently some sort of counterweight for a piece of heavy equipment that had fallen off a low-boy or whatever. It lay in our yard by a tree base for years and I just mowed around it and sputtered about it being there. Keep in mind I was anvil shopping all the time it was there, but I had blinders on and never thought outside the box as far as anvils go. It was 3' or so long, maybe 10" wide, and one side was flat as a pancake. When scrap hit a new high a few years ago it was loaded up with all the other "worthless" metal on the old farm and carted off to the recyclers. I never tried to I.D. the thing by putting a picture on any forum, never even remember any stamping or marks on the thing at all, but now I am kicking myself for possibly tossing out a great surrogate anvil, or worse....scrapping something that was worth enough to by a GREAT anvil!

Okay folks....sock it to me, smooth move or just one more of my numerous dumb-xxxx decisions?

If it was, in fact, some kind of counterweight, ... it was most likely cast iron or cast steel.

Not much good as an Anvil.

One other didbit....it never got a speck of rust on it over the several years it lay on the ground.

It depends if it was a peice of cast iron, cast steel or cut plate. In the first case, better than nothing, I the latter two cases, you let a perfectly good anvil get away. 

Many things lend themselves to being repurposed as anvils, rail way track, rail car knuckles, rail car axles, excavator/dozer pins, rock crusher parts ect.