This one is rare enough that I can't find another example of it on the internet. I guess that because this was more equipment for warning about fire conditions, it doesn't have the Gov't printing office ID # or date, so I can only guess at it's age; late Fifties, early Sixties is my estimate.

Made from very thick pressed cardboard, not corrugated, the pointer is thinner card stock held on with a metal rivet.

(invart)