4 3/4" X 4" (120mm X 104mm)
(skirt recess embossed) "B in an O" {Ohio Brass}
Picture courtesy Bob Berry |
U-666: USA
4 3/4" X 4" (120mm X 104mm)
(skirt recess embossed) "B in an O" {Ohio Brass}
Picture courtesy Bob Berry |
U number assignment by Jack Tod
Return to the National Insulator US Unipart page