I recently acquired this anvil: markings on it are: FISHER, 150, 1900 and a horseshoe with an eagle on it. I'm assuming it is a farrier anvil. It doesn't seem to ring at all, no cracks but some surface rust and pitting. Is it useful for anything other than horseshoes (hobby blacksmithing)? How much is something like this worth? Should I do anything to it to make it more serviceable?. Any thoughts or information will be greatly appreciated