They don’t make ’em like they used to. This is a Crabtree model A15051 single-gang AC light switch, with cast iron body, that I recently scored on eBay. It was likely manufactured in the 30s, 40s, or 50s, and restored by the eBay seller. I wired it as a remote switch for my photo soft box. Thing’s built like a tank, beautiful to look at, feels great to the touch, and operates with a satisfying CLACK.