These Kato fuses are though to find, designed by a Detroit Edison employee and only used here that I know of. There use to be a lot of these up, but only a few remain. These date roughly from the 1920's to 30's. A lot of the times the fuse stick is either missing or broken, this is intact. I have a few available, this example in the picture has been painted, but I have some with natural weathered look, the insulators can be changed out too if wanted. I'll be at the National Friday and can deliver them, I can also ship if interested. Asking $70