This piece I am unfamiliar with the style number, so I photo'ed it next to a 106 for comparison purposes. I think they probably used these on a trolley system. Not exactly what I'd call a 'beauty', but IT IS an unusual and seldom-offered insulator. This one has a base chip or, possibly made that way, and a another minor chip on the upper wire ridge, and a bit of cable rub from service, and it displays just fine. $20 plus $5 shipping.