Circa 1920-1925 Ohio Brass M-2313. Came off the Savannah River Power Company's 23,000-volt line from Gregg Shoals to Greenwood, SC. This example has a chip on the crown. Comes with the 7-stranded conductor installed in 1907 and soft aluminum wire from the insulator changeout in the 1920s. $10 + shipping. More pictures of this insulator and where it was used on request.