Federal Sign and Signal Twin Beacon Ray data plate: model 11, 2B…

Close-up of the red riveted data plate on a Federal Sign and Signal Corporation 'Twin Beacon Ray' rotating warning light, mounted on a scuffed chrome base. The tag lists Blue Island, Ill. U.S.A., U.S. patent numbers 3,271,735 and 3,281,030, model 11, part 2B10 and 12 volts, with a 03/16/2006 date stamp in the corner.

AI caption July 2008 · Photo 242 of 300