This showed up at our annual Yankee Polecat meet on July 18, 2015 on one of our member's tables. I couldn't find out any history about it. However it appears that (at some unknown time) a threaded insulator was attempted to be twisted upon it evident via slight thread scuffings in its wood. From its manufacture the pin had a slightly indented machined circle at the pin-top from manufacture with a tiny dot in the center. I do not know if this can date or provide any authenticity regarding this pin? At any rate it was rather weathered and looked great especially with its early design.