Here's some more neat split spool insulators. Back: Large spool embossed FLETCHER on edges, Half spool marked 1703, After that a smaller spool embossed FLETCHER on edges, Half spool marked 1705 on inside. Both of these halfs I was told came from the Thomas dump. Would love to find the match other halfs to make them complete. Last is a more modern spool in lt. blue embossed RR H38 on edges. I also have a tree insulator made by this same company in lt. blue. embossed K22. Front: Split spool marked 1479 K on inside. The bracket from this is marked E.E.E. Co. 1117A. The beam clamp on the back of the bracket is marked 401 F.M. Co. (could be Fletcher Mfg. Co. but not sure). Either way it's a great piece.