Just for fun I was looking at (drool) the well known 1904 Locke Worlds fare display photo in high resolution and noticed some intresting things. The next seven photos are part of my observations .... Here is a three part glazeweld stile that would not be obvous ly difrent in appearance at first except for the rather wide inner skirt extending a bit below the outer shell . I have personally found parts of this insulator in the dump... it is basically like a U-926a on the outside but the inner skirts are enlarged to take a 1 3/8 pin the inner skirt extends down a bit more then the normal U-926a . On the broken ones I have seen, you can see the enlarged inner skirt as in this historic photo...