@code3classics: Just picked up three more vintage emergency light bars. The lower squared off model is a Federal Twin Sonic that came out in 1968. The one running above it is a Federal Aerodynic model 24 that was introduced in 1979 and used throughout all of the 1980s and into the 90s. Extremely hard to locate, especially in this condition.  #creatorsearchinsights #siren #emergency #firefighter #ambulance