These old powerlines were in my community delivering electricity for many years, until 2010, when they were replaced by a modern composite one phase line with a neutral wire. On the lower crossarms of these poles, most of the insulator pins are wooden, some are metal. The insulators that hold the three low-voltage phrases are chocolate brown U-2421's. And the insulators that hold the neutral wire are light gray U-2571's. I do not know the numbers for the high voltage insulators on the upper crossarm and the side pin, because I do not know the M numbers or the U numbers very well. I wonder what the date of this line is?