Here is several different types of Neon Sign bushings used on the signs and transformers. First is No Name multi groove, 2nd is marked ?LLANSON/ ?20-85A brown, Next is a No Name cap in brown. These were patented by Joseph Wechsler 2,825,820 March 4,1958. next is a Cobalt Blue bushing, No Name Chocolate brown cap, No Name brown multi groove bushing, a No Name mushroom type brown bushing, Last is marked Knox 7080 multi groove white bushing. This also has three teat rests on the bottom.