Vintage Insulator, Cool Cloverleaf Design, Called a Johnny Ball, where used to Insulate Guy Wires on Poles, Would make a good Paper Weight, Door Stop? 1.3 Lbs. Collectors Item. One hole going front to back on lower, one hole going left to right on upper. B in Circle Marking indicates Ohio Brass Co. Circa 1930s, St Cloud, MN 2.5wX2.5Dx3.5H