Dang! Wished I'd gotten that. I've been wanting a Philly PD red Twin with the blue Sireno beacon on them like they ran in the mid-70s when I went to college there. Hope he can find a less faded Sireno dome.
Here are two photos of Philly PD cars with the blue light on top of the lightbar. I actually asked a couple guys about that lightbar and someone told me it wasn't a Philly PD bar. I wasn't sure so I didn't bid on it.