Can anyone verify the manufacturer of this semaphore?
Found this prewar manual lighted double semaphore at a train show yesterday in upstate NY. Possibly Bing, but doesn't match any images I've found so far. Any clues as to the manufacturer and when? No brand or company markings on the piece and no box. Appears to have original paint with some paint loss as would be expected of a nearly 100 year old item. Took me awhile to figure out how to replace the light bulbs. It lights too btw...