CD 637.5: Russia
5 1/8" X 6 7/8" (128mm X 174mm)
(inside front skirt) AIZ "in a rectangle" ШС-20Г 13 [Note: Plastic pin cemented in]
Picture courtesy Bob Berry |
This is a modern glass power insulator from Russia or Soviet states.
CD assignment by Dario Dimare November 2016.