I recently purchased this insulator off of ICON. The U number is to be determined. The porcelain T-bar came with it. All the metal hardware was missing. I know this is not an authentic restoration as I used American hardware on a German insulator, but I just couldn't help myself. It may not even be an accurate arrangement, but I think it looks cool. I wanted to keep the two pieces together and this is a good way to keep them from getting separated.