An anvil was donated to me and I've grown obsessed about finding out the make of it. My guess is that it is a Trenton, but it only has a square hole under it (no hourglass/oval depression). The table and the horn are not quite level, which would seem to exclude Peter Wright if my understanding is correct.
It weighs about 122-124 lbs, is 24 inches long and 4 wide. Hardy hole is more 7/8th than 3/4, but it's quite old and therefore hard to measure with precision.
It has a nice ring and works wonderfully so far. The markings seem to have been chiseled out (as opposed to simply worn out), so my guess is that it is a reject. The casting seems to be a bit asymmetrical, so that might be the reason.
Thanks for your help!!!!