I picked up another lighted sign for my collection, a 30's ACSC STOP. The previous owner installed it on a small display stand. The sign is 6 1/2" deep, 24" wide, inside there is a 110v motor and gear to flash the light.
Enjoy,
Brian
www.caltrafficsigns.com
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fcaltrafficsigns.com%2Fpictures%2Falbums%2Fuserpics%2F10001%2Fnormal_STOP_FLASHER_01.JPG&hash=b47554b7f6390dde94714740d0bce9f4df8a55da)