I've been scouring all of my color Rdg. Co. books in vain for a shot of a semaphore-type signal used at flag stop shelters on branch lines, since I am doing a diorama of County Line on the Newtown Branch c. 1958 as a run-up to a layout. All I can find seem to be train-order semaphores, which were red with a white band at the end of the blade and three lenses - anyone have any clue if the "flag stop" ones were different? Maybe only two lenses and a yellow pointed blade? Any leads or links to color shots would be much appreciated.