Was at an auction recently and came across an anvil I'd never seen before. Couldn't find any markings, but house a large round base, weighs about 15 pounds, has a 1/2 in hardy hole, its hollow, and the back has a huge hole that looks like a mounting setup. Any ideas? I don't normally buy stuff like this buy it intrigued me and I got it for a mere 15 bucks. Figured I can use it as a portable.