I was online and reading your post almost as soon as it went up, but said nothing because I have no idea about the value of this piece. I've never seen one in anywhere near this condition up for sale-only in exhibits. If it were mine, I'd chain my wife downstairs and put it in the living room. As far as actual usefulness is concerned, remember that virtually all farm implements were sharpened to perfectly useful edges for centuries on devices like this. Every logging operation had at least one when trees were felled, limbed and sectioned by axes. Humanity not only survived the absence of mirror edges, but prospered and progressed.