This last group with different manufacturers includes some of the later styles with double grooved ends. They are missing the bracket which was usualy a L shaped bracket screwed to a pole or building. I hope to find some brackets in the future to complete these units. The first piece in the back row was marked with an S for Seyler Mfg. Co. The next piece is an Oliver Mfg. Co. spool. After that Is a Gould Co. swinging spool. The front row is a Josly Mfg. Co., Knox Porcelain Co. (K-303) and a No Name joslyn Mfg. Co. spool.