Hello can anyone identify this Fedelcode siren? It was in Vaucluse, Sydney and was used in WW2, 1941. https://flic.kr/p/2mXv92X This looks like a Fedelcode 7 or 5 since there is a large "Fedelcode logo" but Im no federal signal expert. Im trying to find where this used to be in Vaucluse N...