I recently acquired two vintage RCA MI-11717 “ON AIR” warning lights in original condition from a 1950′s TV studio that was demolished. I fell in love with radio back in the 1970′s, and have enjoyed a career in broadcasting and communications. I love these great old art deco “on air” lights, and I’m curious to know more about them and what they’re worth. I know there are replicas out there, but these are the real item. I plan to use one in my office, and another in my home theater (if I ever get it installed).