Unusal looking siren

[Skulldigger]

 

[cmb56]

The warning lights are Mars DX oscillating lights but what the half spherical device is, I do not know.
The siren in the second photo is probably a Hedberg siren.

Michael

 

[searacer]

Never seen anything like that before.

 

[southpaw]

Arcadia CA Police Department for the Fords in the last photo. Here is one of their 64 Chevys with the same set up. And photos of a DX I recently acquired.