A friend of mine was cleaning out his barn and gave me these pieces. I know absolutely nothing about mud and thought I would ask the experts on these. The 2 on the left are Ohio Brass-B in a circle- and there are no markings on the other 2. They are all kind of what I refer to as Camo color and the far right is a triple petticoat and a heavy piece. Are they worth hanging onto? Thanks Much!