The following post shows the CD 112.4 Hemingray No. 8 with a side by side comparison of both the center and skirt embossed CD 112 S.B.T. & T. Co insulators. I wonder if both the Hemingray and Pennycuick glass houses manufactured the CD 112 insulators for Southern Bell. If others have the CD 112.4 could you please post where they were found. There are also CD 112.4 which are found in Canada - I have various colors in my collection. Does anyone have the history of where these insulators were made? Maybe some one can post a good picture and some history on the Canadian CD 112.4.